Network UPS Tools - Fortress UPS Protocol

Communicating with Fortress® Using the RS232 Port

This FTS explains how to communicate with standalone LI 520, 720, 1020, and 1420 Fortress models using the DB9S communication port. (This FTS is not for rackmount models.) This document provides information for all Fortress software versions through 1.00.

Fortress includes a free CheckUPS® II Suite software package for power monitoring and for automatic shutdown during long power outages. If you are planning to use this software, see the instructions and the online manual you received with the CheckUPS II CD.

This document begins with a list of ways you can use the RS232 port. It then describes how to set up full-duplex RS232 communication between your computer and Fortress so you can send commands and receive messages from the UPS. This document also explains how to use the commands and Fortress' parameters to control Fortress operation or to display information about the Fortress and power conditions.

If you have any questions about Fortress communication, call the nearest Best Power office, or call Best Power’s Worldwide Service at 1-800-356-5737 (U.S. and Canada) or 1-608-565-2100.

How You Can Use the Communication Port

You can use the Fortress' RS232 communication port for several functions:

+12 Level — Pin 8:: You can use the + 12 VDC Level on pin 8 for setting an external logic level 1. You can use this to set a fixed input logic level in an external device. The voltage is present whenever the Fortress is operating.
CheckUPS II Software:: If you are using the free CheckUPS II software you received for power monitoring and automatic shutdown, the communication port is the connection point for your CheckUPS II interface cable. See the instructions that came with the CheckUPS II software. CheckUPS II is also set up to work with Windows 95® Plug and Play Sense. See step 8 in the Startup section of the Fortress User Guide.
Remote Monitoring (Relay Contacts):: Fortress has contacts that indicate when the unit is running on battery and when it is sounding a Low Battery Alarm. You can connect these contacts to your own alarm system or indicator for remote monitoring. CheckUPS II software also uses these contacts to control the shutdown of computers or computer networks.

Using parameter 81, you can decide which alarms will activate alarm contact; see section Choosing Which Alarms Enable the Alarm Contact (Parameter 81) for more information. Using parameters 80 and 88-89, you can also change the contacts from normally open to normally closed, and you can change the delay before the battery contact closes. See section Changing the Settings for Alarm and Battery Contacts (Parameters 80 and 88-89) for more information.
Remote Shutdown:: Two pins at the Fortress' DB9S port allow you to shut down your Fortress from a remote switch. Parameters 85-87 and 82-84 let you decide what type of signal or contact action will cause a shut down and how long the Fortress should delay before shutdown. See section Changing Remote Shutdown Settings (Parameters 82-84 and 85-87) for more information.
RS232 Communication:: You can connect your Fortress to a terminal, computer, or modem for full-duplex communication. This connection lets you send commands to the Fortress to display values or control Fortress operation. You can even set up your Fortress to start and shut down automatically at the times you choose. Section Starting Two-way RS232 Communication describes how to to set up RS232 communication, section Using Commands to Communicate with the Fortress explains how to use Fortress commands, and section Using Parameters explains how to use parameters.

Choosing a Communication Mode

Fortress has two communication modes: RS232 Communication Mode and Extended Signal Mode. This section explains the modes and how to change them.

RS232 Communication Mode

Fortress is set to the RS232 Communication Mode when you receive it. This is the mode that your CheckUPS II Suite uses; it is also the mode that you must use for RS232 communication. When you select this mode, the pins at the DB9 port perform these functions:

Pin	Function
1	RS232 Receive Data. Receives incoming RS232 communication data.
2	RS232 Transmit Data. Sends outgoing RS232 communication data.
3	Normally Open On Battery Contact. A normally open contact that closes 15 seconds after the UPS switches to battery power. You can adjust the delay before the contact closes, and you can change the contact to normally closed; see section Changing the Settings for Alarm and Battery Contacts (Parameters 80 and 88-89).
4	Common. The signal ground for all signal pins.
5	Normally Open Low Battery Contact. A normally open contact that closes during a Low Battery, Near Low Battery or Low Runtime alarm. This tells CheckUPS II and other shutdown software when to start a computer shutdown. You can program this contact to close during other alarms; see section Choosing Which Alarms Enable the Alarm Contact (Parameter 81). You can also change the contact to normally closed; see section Changing the Settings for Alarm and Battery Contacts (Parameters 80 and 88-89).
6	Plug and Play Sense for Windows 95®
7	Remote Shutdown. Shorting this pin to common turns the UPS off. See section Changing Remote Shutdown Settings (Parameters 82-84 and 85-87) to change what causes a shutdown and the delay before the shutdown.
8	Unregulated +12V isolated source.
9	Not Used.

Contacts consist of open collector circuits capable of switching up to +40 VDC 50 mA resistive load. Only pins 1 and 2 differ from Extended Signal Mode; these are the pins that allow RS232 communication.

Extended Signal Mode

The Extended Signal Mode does not allow RS232 communication, but it includes a programmable contact for remote shutdown and a pin that produces a 12 VDC (RS232-level) signal when the unit runs on battery. This mode is mainly for applications that require signals for your computer software or other external equipment.

Only pins 1 and 2 change in this mode; pins 3-9 have the same functions that they have in the RS232 Communication Mode. See the next table.

Pin	Function
1	Remote shutdown. If the UPS is using battery power and a +12 VDC signal is applied to this pin for 5 seconds, the UPS will shut down 30 seconds later. When the power outage ends, the UPS will automatically restart. Signal and shutdown times and automatic restart are programmable. See section Changing the Settings for Alarm and Battery Contacts (Parameters 80 and 88-89) and parameter 39.
2	On Battery Status. When the UPS is using battery power, this pin produces a +12 VDC (RS232-level) signal.
3	Normally Open On Battery Contact. A normally open contact that closes 15 seconds after the UPS switches to battery power. You can adjust the delay before the contact closes, and you can change the contact to normally closed; see section Changing the Settings for Alarm and Battery Contacts (Parameters 80 and 88-89).
4	Common. The signal ground for all signal pins.
5	Normally Open Low Battery Contact. A normally open contact that closes during a Low Battery, Near Low Battery or Low Runtime alarm. This tells CheckUPS II and other shutdown software when to start a computer shutdown. You can program this contact to close during other alarms; see section Choosing Which Alarms Enable the Alarm Contact (Parameter 81). You can also change the contact to normally closed; see section Changing the Settings for Alarm and Battery Contacts (Parameters 80 and 88-89).
6	Plug and Play Sense for Windows 95®
7	Remote Shutdown. Shorting this pin to common turns the UPS off. See section Changing Remote Shutdown Settings (Parameters 82-84 and 85-87) to change what causes a shutdown and the delay before the shutdown.
8	Unregulated +12V isolated source.
9	Not Used.

Contacts consist of open collector circuits capable of switching up to +40 VDC 50 mA resistive load.

Selecting the Communication Mode

DIP switch 4 on the back of your Fortress sets the communication mode. The DIP switches are on the right side of the back panel as shown below.

To set the communication mode, find DIP switch 4 shown. Use a nonmetal object such as a toothpick to move the DIP switch to the correct position for the communication mode you select (left for RS232 Mode, right for Extended Signal Mode). If the UPS is on, it will beep when you change the communication mode. Make sure you do not accidentally change the position of another DIP switch.

Starting Two-way RS232 Communication

You can set up two-way (full-duplex) communication with the Fortress using a dumb terminal or terminal communication program. Two-way communication allows you to issue commands to the Fortress and to display information on your computer or terminal’s screen. The commands are in section Using Commands to Communicate with the Fortress. To set up two-way communication, follow these steps:

Order an interface cable from Best Power (or call Best Power for cable specifications). Connect this cable to the UPS and to the terminal. (Instead of a terminal, you can use a computer with terminal emulation software such as CROSSTALK' or Procomm-, or the Windows Terminal function.) If you are using a terminal, note that Fortress supports the Televideo 900 series, ADM3A and WSE 50 emulation.

If you are connecting the Fortress to a modem, you must configure the modem properly. Set up the modem to ignore RTS and CTS signals (disable hardware handshaking). Enable support for X/ON X/OFF software handshaking. At the Fortress, parameters 73 and 74 enable software handshaking; unless you have changed the settings of these parameters, Fortress is already set up for software handshaking.

Start the terminal or run terminal emulation software on your computer.
Set the terminal or terminal emulation software for the following:
- FULL DUPLEX
- 1200 baud (see note in step 4)
- 8 data bits and 1 stop bit
- No parity

Press <ENTER> at your keyboard. You should receive a => prompt. Press <ENTER> a few times to make sure the Fortress responds.

If you want to change the baud rate at which the Fortress communicates, follow these steps:

Set your computer or terminal baud rate to 1200 temporarily so you can communicate with the Fortress.
Find the DIP switches on the back of the Fortress; then, find DIP switch 1.
If DIP switch 1 is set to the right, the Fortress baud rate will stay 1200 until you change the DIP switch setting. If DIP switch 1 is set to the left as it is in the drawing, the Fortress baud rate depends on the setting of parameter 70. When the Fortress is shipped, parameter 70 is also set to 1200. To change the DIP switch setting, use a nonmetal object such as a toothpick to move DIP switch 1 from one side to the other; if the UPS is on, it will beep. Make sure you do not accidentally change the position of another DIP switch.
Establish communication with the Fortress. Then, enter the Service password by typing password 2639 <ENTER>.
To display baud rate (parameter 70), type display 70 <ENTER>. If you have never changed the parameter setting, the display will show "70 Baud 2)1200".

Setting:
- 0 → 300
- 1 → 600
- 2 → 1200.
To change the setting type program 70 <new setting> <ENTER>. Example: To change the baud rate to 300, type program 70 0 <ENTER>.
Clear the password by typing clearpassword <ENTER>.

To control or monitor the Fortress, simply type the command you need and press <ENTER>. (See section Commands for a list of commands.) You can use the following keystrokes as you type commands or view displays:

Control characters
To do this…	Use these keys:
Delete the last character typed.	<BACKSPACE> or <CTRL><H>
Delete a line.	<CTRL><X>
Pause displays that take more than one screen.	<CTRL><S>
Resume scrolling. (Turn pause off.)	<CTRL><Q>

Using Commands to Communicate with the Fortress

This section explains how to communicate with the Fortress in RS232 mode. See section Starting Two-way RS232 Communication to start two-way communication. If you plan to use CheckUPS II software, see the online manual on the CheckUPS CD for more information about UPS monitoring and control.

Passwords

Before you can enter some commands, you must enter a password. There are two levels of passwords: User and Service. To enter the User password, type the following at the => prompt: pw 377 <ENTER>. After you enter the password, the prompt will change to "User=>". The Service password is for more advanced parameter programming and for service functions. Before you change parameters, you should make sure you understand the effects of the change; if you are not sure, call Best Power for help. To enter the Service password, type pw 2639 <ENTER>. The prompt will change to "Serv=>".

Commands

You can only enter commands if the Fortress is in the RS232 Communication Mode and you are not using CheckUPS II. To enter a command, simply type it in and press <ENTER>. You can type the command in uppercase or lowercase, and you can use the whole command or the short form, or you can abbreviate the command as long as you include the letters in the short form. You can also enter more than one command at once if you put a semicolon between commands. The next table shows each command, its short form, the password required (if any), and what the command does.

Command (Short Form) Password Needed What the Command Does

alarmshelp (ah)

None

Shows a list of all alarm messages, their alarm codes and whether each alarm is active (sounding) now. This command also shows whether a DB9 contact is enabled for each alarm; "enabled means the contact will change position when there is an alarm, To choose which alarms will enable the contact see section Choosing Which Alarms Enable the Alarm Contact (Parameter 81).

alarmstatus (as)

None

Shows a list of all alarm messages, their alarm codes and whether each alarm active (sounding) now. This command also shows whether a DB9 contact is enabled for each alarm; "enabled means the contact will change position when there is an alarm, To choose which alarms will enable the contact see section Choosing Which Alarms Enable the Alarm Contact (Parameter 81).

alarmtest (at)

User

Lets you test the Fortress' ability to sound an alarm. The display will show alarm "Ut", the alarm light will flash and the Fortress will sound the Morse Code for alarm J (.---). The alarm will stop when you send the alarmtest cancel command.

alarmtest cancel (at c)

None

Cancels an alarm test.

clearalarms (ca)

User

Clears all active alarms.

clearhistory (ch)

None

Clears the minimum and maximum parameter values shown when you use the extendedhistory or history commands.

clearpassword (cp)

None

Clears any passwords you have entered.

commands (cmds)

None

Displays a list of all commands. (This list includes some commands that are not valid for Fortress; see section Help Commands.)

contdisplay (cd)

Depends on parameter password

Continuously displays the parameters that you specify. To specify parameters for the continuous display, enter the name or number of each parameter after the contdisplay command. To stop displaying the parameter, press any key.

constatus (cs)

None

Continuously displays the status of the UPS and input and output power. (See the status command.) To stop displaying the status information, press any key.

date (da)

User

Displays a system time and date. To set the date, enter date [month]/[day]/[year].

delay (dl)

None

When you enter more than one command on a line, using delay [#] between commands delays the next command. Each unit represents 2.5 milliseconds, so delay 1 would cause a 2.5mS delay. For a 1-second delay, enter delay 400.

display (d)

Depends on parameter password

Displays the values of one or more parameters. If you choose to display more than one parameter, you can use spaces or commas between the parameters you specify. (See sections Parameter Commands and Parameter Table for more on parameter commands and parameters)

Format: display [parameter # or name] [parameter # or name]

Example: d 1 fullload or d 1,fullload displays the values of parameters 1 and 16.

extendedhistory (xh)

None

Displays the minimum and maximum values of parameters 1 (AC Volts In), 2 (AC Volts Out), 7 (DC Volts) and 5 (VA Out); the command then clears the minimum and maximum values. See the parameter table in section Parameter Table.

format (f)

None

Displays an 80-character line containing information on the Fortress' status. CheckUPS and other UPS monitoring software use this data. See section The Format Commands.

formatconfig (fc)

None

Displays a string of characters containing information about the Fortress' status. Some UPS monitoring software may use this data. See section The Format Commands.

formatparam (fp)

None

Displays a string of characters containing information about the Fortress' status. Some UPS monitoring software may use this data. See section The Format Commands.

history (h)

None

Displays the minimum and maximum values of parameter 1 (AC Volts In); the command then clears the minimum and maximum values.

identify (i)

None

Shows Best Power’s address and telephone number and information about your Fortress.

lock (lk)

User

Locks the front panel so that the buttons cannot be used. After you send this command, the message "front panel buttons locked" will appear on your terminal. Use the unlock command to enable the Fortress' buttons again.

message [ ] [delay] (m)

User

Displays the message you specify on the front panel. For example, message "On" will display "On" on the front panel. Normally, this display will last three seconds, but you can specify the length of time in the command by entering a delay after the message. (The delay is optional, not required.) message "On" 1 would display the message for 1/4 seconds; to specify a whole second, use "4". To keep the message on the display indefinitely, use "0"; you can clear the message by sending the message command alone.

off [time] (o [time])

None

Shuts down the Fortress in the number of seconds you enter. The UPS will display "--" once it has shut down. Example: off 60 shuts down the Fortress in 60 seconds. After shutdown, if you try to restart the UPS before utility power (AC input power) is available, the display will show "L?".

off cancel (o c)

None

Cancels a timed shutdown.

parameters (p)

Depends on parameter password

Shows a list of Fortress parameters. (See sections Parameter Commands and Parameter Table.) You can also display a range of parameters by entering the starting and ending parameter number or parameter name after the command.

paramkeywords (pk)

Depends on parameter password

Displays all parameters and their keywords (the names you can use with commands). You can also display a range of parameters by entering the numbers or the names of the starting and ending parameters.

password [] (pw [])

None

Entering this command followed by a password number enters that password. For example, password 377 enters the User password and password 2639 enters the Service password. Entering the command alone clears the password.

program (pr)

Depends on parameter password

Lets you set the value of any parameter. You must enter the appropriate password before you reset the value. See the password command above.

Format: pr [parameter # or name] [new value]

Example: pr 0 815 resets the time (parameter 0) to 8:15 am.

reset (reset)

User

Shuts down the Fortress immediately. To restart the Fortress, press the top button on the front panel.

restart (restart)

User

Shuts down the Fortress and restart it. There will be a break in power as the Fortress shuts down and restart.

shutdown (sd)

None

Shuts down the Fortress in 60 seconds or the number of seconds you type after the command. The UPS beeps every 4-5 seconds until shutdown.

shutdown autostart (sd a)

None

Shuts down the Fortress as described above and restart the UPS shortly after power returns.

shutdown cancel (sd c)

None

Cancels a shutdown started with the shutdown command.

shutup (sh)

None

Turns off a Morse Code alarm. The display will still flash the alarm message and the red alarm light will stay on.

status (s)

None

Displays the status of the incoming utility power, the output to your protected equipment, the UPS and some UPS parameters.

systemmode __ (sm)

User

Typing systemmode alone displays the mode the Fortress is operating n: Auto (a), Inverter (i), Line Condition (l) or Off (o). You can also use the systemmode command to put the Fortress in one of these modes; for example, systemmode auto or sm a puts the Fortress into Auto mode.

`Auto`:	The normal operating mode; the unit will operate on utility power until there is a power outage or a severe power problem; then, it will switch to battery power.
`Inverter`:	The unit will always operate on battery power.
`Line Condition`:	The unit will always run on utility power; it will only operate on battery power momentarily, even if there is a power outage.
`Off`:	The unit is off

systemtest (stst)

User

Starts a system test to determine whether Fortress is ready to run on battery power. Fortress does this test automatically every 30 days. If the Fortress fails the test, it sounds an "rb" alarm. The batteries must be fully charged before a test may be started.

time (t)

User

Shows the current Fortress time. To set the time, enter [hour]:[minutes] after the command.

turnoff (toff)

User

Shuts down the Fortress after the number of seconds you specify and restarts it after the number of minutes you specify. The format of this command is turnoff [minutes until restart] [seconds until turnoff]. For example, turnoff 3 60 would turn off the Fortress after 60 seconds and restart if after three minutes.

unlock (ul)

User

Using the lock command, you can lock the Fortress' front panel buttons. When you are ready to unlock the front panel, use the unlock command-

unshutup (u)

None

Turns the Morse Code alarm on again after you have silenced it.

Help Commands

You can use some commands to help you learn more about how the Fortress works. These commands are alarmshelp, alarmstatus, and commands.

AlarmsHelp and AlarmStatus Commands

The alarmshelp and alarmstatus commands display a list of alarms with their letters and codes, the current status of the alarm (active or off), and the relay setting. See the sample list below:

Active   Alarm Name         Ltr   Code     Contact
------   -----------------  ---   ----     -------
  No     Low Battery         A    ._       Enabled
  No     Near Low Battery    B    _ ...    Enabled
  No     High Battery        C    _._.     Disabled
  No     Low Runtime         D    _..      Disabled
  No     Low AC Output       E    .        Disabled
  No     Fan Malfunction     F    .._.     Disabled
  No     Output Overload     G    _ _.     Disabled
  No     External Shutdn     H    ....     Disabled
  No     Calibration Lost    I    ..       Disabled
  No     User Test Alarm     J    ._ _ _   Disabled
  No     Replace Battery     K    _._      Disabled
  No                         L    ._..     Disabled
  No                         M    _ _      Disabled
  No                         N    _.       Disabled
  No                         O    _ _ _    Disabled
  No                         P    ._ _.    Disabled

Commands

When you enter commands, the terminal will display a list of commands.

The following commands in the displayed list are not implemented for Fortress: alarmlog, chargermode, clearlogs, help, inverterlog, and logs. If you use the help command, you will be referred to the Fortress User Guide; if you use the other commands, you will receive the message "Command not implemented". The command list also shows commands that you cannot use without a password higher than the Service password. See section Commands for a list of valid commands and the passwords you need to use them.

Status Commands

The alarmstatus command shows the same alarm information that the alarmshelp command does. See the sample above. The status and contstatus commands display several Fortress parameter values, active alarms, and other status information. Next is an example of a status display.

System status report for L1520VA [Unit ID - parameter 15] (Serial Number) Friday, July 12, 1996 - 12:32:41

Line Status   | Load Status   | UPS Status    | Totals
--------------|---------------|---------------|----------------
V In      120 | I Out     .9  | Mode:  OnLine | SysHrs:   0000
V Out     120 | VA Out    108 | Tap:   Bypass | InvMin   0000.0
Freq 59.96 Hz | Watts     106 | V Batt   30.4 | #PwrOut      0
FF  0.98 ---- | FullLoad% 030 | Runtime   0m  | #OvrLds      0

Front panel: L - - | 30

Last battery power run duration: 25 seconds

Active alarms:
(None)

In the status display, the table shows the values of many Fortress parameters and the status of Fortress operation.

`Line Status`:	"`V In`" and "`V Out`" show the input and output voltage, "`Freq`" shows the output frequency, and "`PF`" shows the power factor. See parameters 1, 2, 8 and 18 in section Parameter Table for more information.
`Load Status`:	"`I Out`" shows the output current, "`VA Out`" shows the output volt-amperes, "`Watts`" shows the output watts, and "`FullLoad%`" shows the percent of the Fortress' power your equipment (or load) is using. See parameters 4, 5, 17 and 16 in section Parameter Table for more information.
`UPS Status`:	"`Mode`" shows whether the unit is running on line (utility power) or battery. "`Tap`" shows whether the UPS is using boost (to increase a low input voltage), buck (to decrease a high input voltage), or bypass (to condition input voltage that is at acceptable levels). "`V Batt`" shows the battery voltage, and "`Runtime`" shows how long the unit can run on battery power; see parameters 7 and 9 in section Parameter Table for more information.
`Totals`:	"`SysHrs`" shows the total number of hours the Fortress has operated. "`InvMin`" shows the number of minutes the Fortress has operated on inverter (battery power) since it started. "`#PwrOut`" shows how many power outages have taken place since you started the Fortress, and "`#OvrLds`" shows how many times the Fortress has been overloaded since you started the Fortress. See parameters 22, 23, 20 and 21 in section Parameter Table for more information.
`Front Panel`:	This part of the status report approximates what you will see on the Fortress front panel. In the example, "`L`" means the green light (the "line" light) is on, which shows that the Fortress is running on utility power. The two dashes behind the line mean that the yellow light and red light are not on. If they were, you would see a "`B`" (meaning the Fortress was running on battery power) and an "`A`" (meaning Fortress is sounding an alarm). "`30`" is the number shown on display; since the green (`L`) light is on, this is the percent of the UPS' total power that your equipment is using. See the Fortress User Guide for more information about the display.
`Last Battery Power Run Duration`:	This entry shows how long the UPS ran on battery power last time there was a power outage or severe power problem.
`Active Alarms`:	The last part of the status report shows which alarms are active. If the UPS is not sounding any alarms, the report will show "`(None)`" as it does in the example.

The contstatus command shows the same report as the status command, but it continuously updates the information until you press a key.

Parameter Commands

This section describes the commands you can use to display and program parameters.

When you use the commands described below, you must often specify a parameter. To do this, you can enter the parameter number or its name. The Parameter Table in section Parameter Table shows the name you can use for each parameter; you can also use the short form shown in the table, or you can enter an abbreviation of the name as long as you include the letters in the short form. (You can also abbreviate commands; see section Commands.)

The display, contdisplay, parameters and paramkeywords commands let you display parameters. The program command changes parameter values.

Display

The display (or d) command lets you display specific parameters on your computer or terminal. For example, if you enter display 0, display time or d t, your computer or terminal will display parameter 0 (below). Notice that you must leave a space between the command and the parameter number or name.

00 Time 14:42:21

If you enter more than one parameter name or number after this command, your computer or terminal will display those parameters. For example, if you enter d time 38 10, the display will show parameters 0, 38, and 10:

00 Time 14:42:21
38 LowRuntime 5
10 Date 08/30/96

Notice that you can mix names and numbers, and you can list the parameters in any order.

If you have already displayed a parameter, you can display the next parameter by entering display alone.

Contdisplay

The contdisplay (or cd) command works like the display command, but it constantly updates the parameter values displayed until you press a key.

Parameters

Like the display command, the parameters (or p) command will display a parameter if you enter a parameter number or name after the command. For example, if you enter parameter 0, parameter time, or p t, your terminal or computer will display something like the next sample.

00 Time 14:42:21

However, the parameters command works differently when you enter it alone or when you enter more than one parameter after the command. When you enter parameters (or p) alone, your computer or terminal displays all of the user-level and service-level parameters shown in section Parameter Table.

To display a range of parameters, enter the starting and ending parameters after the command. Instead of showing just the parameters you list (as the display command does), the parameters command will display all of the parameters in between. For example, if you enter parameter 0 5, parameter time vaout, or p t va, your computer or terminal will display parameters 0 through 5:

00 Time 14:42:21
01 V In 118.2
02 V Out 118.2
03 *L - A 00
04 I Out 11.8
05 VA Out 345

Paramkeywords

The paramkeywords (or pk) command works like the parameters command, but it also displays the keyword or name of each parameter you display. (The keyword is the name shown in section Parameter Table.) For example, if you enter paramkeywords time vaout (or pk t va), your computer or terminal will display a list like this example:

00 Time 14:43:59 Time
01 V In 118.2 acVoltsIn
02 V Out 118.8 acVoltsout
03 *L - A | 00 DiSplay
04 I Out 11.8 acampsiOut
05 VA Out 345 VAout

Notice that some letters are capitalized in the keywords on the right. These letters make up the short form of the parameter name (or keyword).

To display all of the user and service parameters and their keywords, enter paramkeywords (or pk) alone.

Program

Before you can program or change some parameters, you must enter the User or Service password. (See section Passwords.) Some parameters cannot be changed; see section Parameter Table.

The program (or pr) command lets you program parameters. Simply type program, the parameter number or name, and the new value.

Example: If you enter program time 09:30:00, the time will be changed to 9:30 a.m. If you then display the parameter using the command display time, you will see a display similar to this:

00 Time 09:30:00

The Format Commands

The three format commands tell the Fortress to send system status and metering information in a fixed format. You can incorporate this information into your computer system’s software without any text or punctuation. There are three commands: format (f), formatconfig (fc), and formatparam (fp).

For the format (f) command, the data string is made up of

two carriage returns and a line feed,
80 ASCII characters that represent 40 hexadecimal bytes of information, and
two more carriage returns and a line feed.

The characters in the string represent the data shown in the next table. For an example of the string, see section Examples.

Characters # Bytes Description

header

Not Applicable

A carriage return, carriage return, line feed sequence (or <ODH><ODH><OAH>).

0-1

Month (BCD). Range: 01-12

2-3

Day (BCD). Range: 01-31

4-5

Hours (BCD). Range: 00-23

6-7

Minutes (BCD). Range: 00-59

8-9

Seconds (BCD). Range: 00-59

10-11

System Mode (BCD). Range: 00-03

00 = Off
01 = Auto
02 = Line Condition
04 = Battery Power

12-13

Reserved for future use.

14-15

Status of the Morse Code alarm (BCD). Range: 00-01

00 = Alarm silenced
01 = Alarm beeper enabled

16-17

Inverter (battery power) status (BCD). Range: 00-01

00 = Unit is not using battery power
01 = Unit is using battery power

18-19

Charger Status (BCD). Range: 00-01

00 = Charger is off
01 = Charger is on

20-21

Alarm Status Register #1 for alarms A-H (bit-mapped, 1 = true). The value is transmitted as a two-digit hexadecimal number. See the information below.

Bit Position	7	6	5	4	3	2	1	0
Alarm	External Shutdown	Output Overload	Fan Malfunction	Low AC Output	Low Runtime	High Battery	Near Low Battery	Low Battery

22-23

Alarm Status register #2 for alarms I-K (bit-mapped, 1 = true). The Value is transmitted as a two-digit hexadecimal number. See the information below.

Bit Position	7	6	5	4	3	2	1	0
Alarm	Reserved	Reserved	Reserved	Reserved	Reserved	Replace Battery	User Test	Calibration Lost

24-27

AC Volt In (BCD). Range: 0000-9999

28-31

AC Volts Out (BCD). Range: 0000-9999

32-35

Reserved for future use.

36-39

AC Output Current in Amps (BCD). Range: 0000-9999

40-45

Volt-Amperes (VA) Out (BCD). Range: 000000-999999

46-49

Reserved for future use.

50-53

Battery Voltage (BCD). Range: 0000-9999

A decimal point is implied after the third digit (xxx.x).

54-57

Frequency in Hz (BCD). Range: 0000-9999

A decimal point is implied after the second digit (xx.xx)

58-61

Runtime Minutes Remaining (BCD). Range: 0000-9999

62-69

Reserved for future use.

70-71

Console Error Codes:

00 = No error
01 = Unrecognized command
02 = Not implemented
03 = Number expected
04 = Bad/missing keyword
05 = String expected
06 = Keyword or number expected
07 = Additional parameters expected
08 = Too many parameters
09 = Value out of range
0A = Bad password
0B = Password required
0C = Parameter not programmable
0D = Cannot change system mode
0E = Unrecognized error code

72-73

Input Line Status. The value is transmitted as a two digit hexadecimal number.

Bit Position	7	6	5	4	3	2	1	0
Status	Inverter frequency locked to line	Inverter phase locked to line	Reserved	Reserved	Line gone	Input voltage too high or low	Line glitch detected	Input frequency is bad

74-77

Fortress' Software Version number. A decimal point is implied after the second digit (xx.xx)

78-79

Checksum Byte (Hexadecimal, 00-FF is valid). Equal to the 2’s complement hex sum, without carry, of the preceding 39 two-digit hexadecimal numbers.

trailer

Not Applicable

A carriage return, carriage return, line feed sequence (<ODH><ODH><OAH>).

For the formatconfig (fc) command, the data string is made up of

a carriage return and a line feed,
the data string defined in the following table, and
another carriage return and a line feed.

The header and the first 70 characters in the string are always present; if the information required for one of these characters is not available, the characters will be filled with a question mark (?). After character 70, all characters are optional. This means that if the information is not available, the characters are not included in the string; however, backslashes will appear between fields of information even if there is no information in a particular field.

The next table shows the fc-string fields in the order in which they appear. The table does not identify the character position because this depends on the length of some fields and the number of fields that are present. For an example of the fc string with the fields identified, see section Examples.

FC String
Field	Field Size	Explanation
header	Varies	A carriage return and line feed (or <ODH><OAH>). The size of this field can vary because the Fortress echos back the command you enter. See field 1 below.
1	1 character (`$`)	`$` (ASCII `24h`). This is the start-of transmission character. Since Fortress II echos back the command you enter and begins the `fc` string with a carriage return and line feed, you should program your system to discard any data before this character.
2	2 characters (hexadecimal)	Two hexadecimal characters that represent the revision code of the `fc` data string.
3	2 characters (hexadecimal)	Two characters that show the type of power protection being used: `00` = unknown `01` = Patriot/SPS `02` = Fortress `03` = FERRUPS `04` = UNITY/1 single-phase For Fortress, this is always `02`.
4	2 characters (hexadecimal)	The UPS model. `00` = LI 520 `01` = LI 720 `02` = LI 1020 `03` = LI 1420
5	4 characters	The Fortress' software version (xx.xx). For example, `0100` = Fortress software version 1.00.
6	5 characters	The Fortress' full-load VA rating. For example, `0520` means the Fortress is rated 520 VA.
7	5 characters	The Fortress' full-load Watt rating- For example, `0340` means the Fortress is rated for 340 watts.
8	3 characters	The nominal input voltage (VAC).
9	3 characters	The nominal output voltage (VAC).
10	3 characters	Low voltage battery power setpoint (VAC). When the input voltage to the Fortress drops to this level, the Fortress begins running on battery power because input voltage is too low.
11	3 characters	High voltage battery power setpoint (VAC). When the input voltage to the Fortress rises to this level the Fortress begins running on battery power because input voltage is too high.
12	4 characters	Nominal operating frequency in Hz (xx.xx). For example, `5000` means the nominal frequency is 50 Hz.
13	4 characters	Low frequency setpoint in Hz (xx.xx). When the input frequency drops to this level, the Fortress begins running on battery power because input frequency is too low.
14	4 characters	High frequency setpoint in Hz (xx.xx). When the input frequency rises to this level, the Fortress begins running on battery power because input frequency is too high.
15	4 characters	The nominal battery voltage in VDC (xxx.x). For example, `0480` means the nominal battery voltage is 48 VDC.
16	4 characters	Full charge battery setpoint in VDC (xxx.x)
17	4 characters	Near low battery setpoint in VDC (xxx.x). The point at which the Fortress sounds a Near Low Battery alarm (alarm B; see the Fortress User Guide).
18	4 characters	Low battery setpoint in VDC (xxx.x). When battery voltage drops to this level, the Fortress shuts down and sounds a Low Battery alarm (alarm A; see the Fortress User Guide).
19	3 characters	Low runtime setpoint in minutes (xxx). When runtime drops to this level, the Fortress sounds a Low Runtime alarm (alarm D; see the Fortress User Guide).
20	3 characters	For Fortress, these characters are always "`???`".
21	3 characters	For Fortress, these characters are always "`???`".
22	1 character (`\`)	`\` (ASCII `5Ch`). This character shows that an optional field follows. (See field 23.) If the Fortress does not have any data for that field, no data will be between this character and field 24, and the string will show "`\\`".
23	String of up to 16 characters	This field shows the UPS model number. For example, the string could show "`LI520U`". The string may be up to 16 characters.
24	1 character (`\`)	`\` (ASCII `5Ch`). This character shows that an optional field follows. (See field 25.) If the Fortress does not have any data for that field, no data will be between this character and field 26, and the string will show "`\\`".
25	String of up to 16 characters	This field shows the UPS serial number. The string may be up to 16 characters.
26	1 character (`\`)	`\` (ASCII `5Ch`). This character shows that an optional field follows. (See field 27.) If the Fortress does not have any data for that field, no data will be between this character and field 28, and the string will show "`\\`".
27	String of up to 32 characters	This field shows the user-specified identification string programmed into parameter 15. The string may be up to 32 characters.
28	1 character (`\`)	`\` (ASCII `5Ch`). This character shows that an optional field follows. (See field 29.) If the Fortress does not have any data for that field, no data will be between this character and field 30, and the string will show "`\\|`".
29	String of up to 32 characters	This field includes data specific to your unit.
30	1 character (`\|`)	`\|` (ASCII `7Ch`). This is the end-of transmission character. If you are programming your system to work with the Fortress, you should program it to ignore any data after this character.
trailer	Varies	A carriage return, line feed and prompt.

For the formatparam (fp) command, the data string is made up of

a carriage return and a line feed,
the data string defined in the following table, and
another carriage return and a line feed.

The header and the first 124 characters in the string are always present; if the information required for one of these characters is not available, the characters will be filled with a question mark (?). All characters after character 124 are optional. This means that if the information is not available, the characters are not included in the string; however, backslashes will still appear between fields of information even if there is no information in a particular field.

The next table shows the fp-string fields in the order in which they appear. The table does not identify the character position because this depends on the length of some fields and the number of fields that are present. For an example of the fp string with the fields identified, see section Examples.

Field Field Size and Type Explanation

header

Varies

A carriage return and line feed (or <ODH><OAH>). The size of this field can vary because the Fortress echos back the command you enter. See field 1 below.

1 character (&)

& (ASCII 26h). This is the start-of-transmission character. Since Fortress echos back the command you enter and begins the fp string with a carriage return and line feed, you should program your system to discard any data before this character.

6 characters

The date programmed into Fortress parameter 10 (month/day/year). For example, 092396 = September 23, 1996.

6 characters

The time programmed into Fortress parameter 0 (hour:minutes:seconds). Remember that the Fortress uses 24-hour time. For example, 153602 = 3:36 p.m. and 2 seconds.

1 character

The day of the week programmed into Fortress parameter 11:

00 = Sunday
01 = Monday
02 = Tuesday
03 = Wednesday
04 = Thursday
05 = Friday
06 = Saturday

3 characters

AC input voltage. This is the input voltage the Fortress is receiving.

4 characters

AC input current. For Fortress, this data is based on output current.

4 characters

AC input frequency in Hz (xx.xx). This is the frequency of the input Fortress is receiving. For example, 5000 = 50 Hz.

5 characters

Input volt-amperes (VA). This is the volt-amperes that the Fortress is drawing from your input power source.

5 characters

Input watts. This is the watts that the Fortress is drawing from your input power source.

3 characters

AC output voltage. This is the voltage the Fortress is providing to protected equipment.

4 characters

AC output current in amperes (xxx.x). For example, 0031 = 3.1 amperes.

4 characters

AC output frequency in Hz (xx.xx). This is the frequency of the output Fortress is providing to the protected equipment. For example, 5000 = 50 Hz.

5 characters

Output volt-amperes (VA). This shows the volt-amperes that the Fortress is providing to your protected equipment.

5 characters

Output watts. This shows the watts that the Fortress is providing to your protected equipment.

3 characters

Output load (% of the Fortress' rated watts or VA). For example, 075 = 75% of full load.

3 characters

Output power factor (x.xx). For example, 070 = 0.7 pF.

1 character

Power factor type:

0 = unknown
1 = lead
2 = lag
3 = distortion

3 characters

Output load crest factor (x.xx).

5 characters

The number of times the UPS has run on battery power and/or detected bad input power since startup.

5 characters

The number of times the Fortress has been overloaded since startup.

4 characters

Battery voltage in VDC (xxx.x). For example, 0486 = 48.6 VDC.

4 characters

Battery current in amperes (xxx.x). For example, 0036 = 3.6 amperes.

3 characters

For Fortress, these characters are always "???".

3 characters

Estimated battery runtime in minutes.

4 characters

The number of seconds the UPS has been operating on battery power; if the UPS in not running on battery power, this shows the length of the last battery power run (in seconds).

1 character

For Fortress, this character is always "?".

3 characters

For Fortress, these characters are always "???".

5 characters

The total number of hours the UPS has operated.

5 characters

The total number of minutes (xxxx.x) the UPS has run on battery power. 00255 = 25.5 min.

3 characters

For Fortress, these characters are always "???".

2 characters (hexadecimal)

For Fortress, these characters are always "00".

2 characters (hexadecimal)

For Fortress, these characters are always "00".

2 characters (hexadecimal)

Alarm status for alarms I-K (bit-mapped, 1 = true). See the information below.

Bit Position	7	6	5	4	3	2	1	0
Alarm	Reserved	Reserved	Reserved	Reserved	Reserved	Replace Battery	User Test Alarm	Calibration Lost

2 characters (hexadecimal)

Alarm status for alarms A-H (bit-mapped, 1 = true). See the information below.

Bit Position	7	6	5	4	3	2	1	0
Alarm	External Shutdown	Output Overload	Fan Malfunction	Low AC Output	Low Runtime	High Battery	Near Low Battery	Low Battery

2 characters (hexadecimal)

System status (bit-mapped, 1 = true). See the information below.

Bit Position	7	6	5	4	3	2	1	0
Meaning	Recheck FP String	Automatic Restart Enabled	Timed Shutdown in Progress	System Test in Progress	Alarm Beeper Enabled	UPS can Run on Battery	On Line	On Battery

2 characters (hexadecimal)

AC input status (bit-mapped, 1 = true). See the information below.

Bit Position	7	6	5	4	3	2	1	0
Meaning	PLL Frequency Locked	PLL Phase Locked	Reserved	Reserved	Power Outage	Input Voltage Too High or Low	Glitches Found	Input Frequency Problem

1 character (\)

\ (ASCII 5Ch). This character shows that an optional field follow. (See field 38.) If the Fortress does not have any data for that field, no data will be between this character and field 39, and the string will show "\|".

String of up to 32 characters

Data specific to your model.

1 characters (|)

| (ASCII 7Ch). This is the end-of-transmission character. If you are programming your system to work with the Fortress, you should program it to ignore any data after this character.

trailer

Varies

A carriage return, line feed and prompt.

Examples

Below you will find examples of the strings sent in response to the format (f) command, the formatconfig (fc) command, and the formatparam (fp) command. In these examples, some parts of the string are shaded to show you the fields or groups of information. The shading is not part of the data string.

The format (f) command

0924 104504 01 00 01 00 01 0000 0120 0120 0000 0031 000520 0000 0486 6000 0015 00000000 0101 DE

Where:

`0924`	Date
`104504`	Time
`01`	System Mode
`00`	Always `0`
`01`	Alarm Beep
`00`	Batt. Power
`01`	Charger Status
`0000`	Alarm Status
`0120`	Input Voltage
`0120`	Output Voltage
`0000`	Always `0`
`0031`	Output Current
`000520`	VA
`0000`	Always `0`
`0486`	Battery Voltage
`6000`	Frequency
`0015`	Runtime
`00000000`	Always `0`
`0101`	Software Version
`DE`	Checksum Byte

formatconfigfc

$ 01 02 00 0101 0520 00340 120 120 090 147 6000 5700 6300 2400 0287 0210 0190 003 ?????? \ LI520U \ LI067125 \\ 5C67345FA001 |

Where:

`$`	Begin Transmission
`01`	FC Rev.
`02`	Fortress
`00`	Model
`0101`	Software Version
`0520`	VA Rating
`00340`	Watt Rating
`120`	Input Voltage
`120`	Output Voltage
`090`	Low Input Volts
`147`	High Input Volts
`6000`	Nominal Frequency
`5700`	Low Freq.
`6300`	High Freq.
`2400`	Nominal Battery Voltage
`0287`	Full Battery Charge
`0210`	Near Low Battery
`0190`	Low Battery
`003`	Low Runtime
`??????`	Not Used
`\`	Start of Optional Field
`LI520U`	Model Name
`\`	Start of Optional Field
`LI067125`	Serial Number
`\\`	Empty Optional Field
`5C67345FA001`	Unit-specific data
`\|`	End Transmission

formatparamfp

& 092796 131513 5 120 0043 5999 00520 00340 120 0043 5999 00520 00340 100 005 1 250 00021 00002 0251 0043 ??? 008 0000 ? ??? 00282 00343 ??? 00000000 4D 8C \ 45FC245012FA |

Where:

`&`	Begin Transmission
`092796`	Date
`131513`	Time
`5`	Day
`120`	Input Voltage
`0043`	Input Current
`5999`	Input Freq.
`00520`	Input VA
`00340`	Input Watts
`120`	Output Voltage
`0043`	Output Current
`5999`	Output Freq.
`00520`	Output VA
`00340`	Output Watts
`100`	% Load
`005`	Power Factor
`1`	Power Factor Type
`250`	Crest Factor
`00021`	Number of Battery Power Runs
`00002`	Number of Overloads
`0251`	Battery Voltage
`0043`	Battery Current
`???`	Not Used
`008`	Runtime
`0000`	Sec. on Battery
`?`	Not Used
`???`	Not Used
`00282`	Hours Operated
`00343`	Batt. Power Minutes
`???`	Not Used
`00000000`	Alarm Status
`4D`	System Status
`8C`	Line Status
`\`	Start of Optional Field
`45FC245012FA`	Model Data
`\|`	End of transmission

Using Parameters

Parameter Table

The next table shows the parameters that you can view or program from a terminal or computer. Some of these parameters keep track of information (like Time or Date) or display operating and power conditions (like voltage, current, or temperature). Other parameters, (Like User ID) let you program the Fortress for special operating conditions.

When you use the Fortress commands to display and program parameters, you can identify the parameter with either its number or name. If you use the name, you can enter the whole parameter name or just the letters in the short form. (See the Name column in the parameter table).

Passwords restrict access to some parameters; see the "Password to Change" column in the table and section Passwords.

All changeable parameters except 0 (Time), 10 (Date) and 15 (Unit ID) are set at the factory. In many situations, only qualified service personnel using the proper metering equipment should change other parameters. Incorrect settings may make the Fortress malfunction. Make sure you fully understand the effects of a parameter change before you try to change the parameter value. If you have questions call Best Power’s Worldwide Service at 1-800-356-5737 or 1-608-565-2100; you can also call the nearest Best Power office.

Number	Name (Short Form)	Sample Display	Password Required to change	Range	Explanation
`0`	`time` (`t`)	`00 Time 12:00:00`	User	0:00-23:59	Time. Fortress uses this time when you program it to startup and shut down automatically. See section Automatic Startup and Shutdown (Parameters 90-93).
`1`	`acvoltsin` (`vi`)	`01 V In 120`	Service	60-255	The input voltage the Fortress is receiving. If this voltage is slightly low, Fortress boosts the voltage; if it is slightly high, Fortress reduces the voltage before supplying output to your equipment. If the input voltage is very high or very low, Fortress switches to battery power operation.
`2`	`acvoltsout` (`vo`)	`02 V Out 120`	Service	60-255	The output voltage Fortress is providing to your equipment.
`3`	`display` (`ds`)	`03 *L - A \| 00`	User	1-3	The status of the front panel display. "`L`" means the green light on the front panel is on, "`B`" means the yellow battery light is on and "`A`" means the red alarm light is on. `*` next to `L`, `B` or `A` means the light is blinking. The last two characters ("`00`" in the sample display) show what the front panel display is showing. You can program this parameter to show a particular display in the last two digits. Choose "`1`" to display percent load, "`2`" to display the input voltage bar graph and "`3`" to display the battery charge bar graph.
`4`	`acampsiout` (`o`)	`04 I Out 11.8`	Service	1.0-25.5	The output current Fortress is providing to your equipment.
`5`	`vaout` (`va`)	`05 Va Out 1416`	Change not allowed	Not applicable	The output volt-amperes or the total "apparent power" your equipment is drawing from the Fortress. This value is based on parameter 2 multiplied by parameter 3; it should be less than or equal to the unit’s VA rating.
`6`	`ibattery` (`ib`)	`06 I Batt 22.3`	Change not allowed	Not applicable	When the Fortress runs on battery, this is the estimated battery current. (When the Fortress runs on utility power, this parameter shows "`0`".)
`7`	`vbatt` (`vb`)	`07 V Batt 36.0`	Service	15.0-75.0	The Fortress' battery voltage. If this voltage is too low, the Fortress will sound a "Lb" (Low Battery) or "Lo" (Low Battery Shutdown) alarm. If this voltage is too high, the Fortress will sound a "Hb" (High Battery) alarm.
`8`	`frequency` (`f`)	`08 Freq 60.00 Hz`	Change not allowed	Not applicable	During normal operation, this is the frequency of power that Fortress is receiving from its power source. If this value falls outside preset limits, Fortress switches to battery operation and this parameter shows the frequency of power Fortress is providing to your equipment.
`9`	`runtime` (`rt`)	`09 Runtime 10m`	Change not allowed	0-255	The estimated number of minutes that Fortress can run (or continue to run) on battery power.
`10`	`date` (`d`)	`10 Date 09/09/96`	User	01/01-12/31	The date (month, day and year).
`11`	`dayofweek` (`day`)	`11 Day 2)Tue`	User	0)Sun-6)Sat	The day of the week: `0)Sun`, `1)Mon`, `2)Tue`, `3)Wed`, `4)Thu`, `5)Fri` or `6)Sat`. Fortress uses the day when you program it for automatic startup and shutdown. See section Automatic Startup and Shutdown (Parameters 90-93).
`12`	`passwordlevel` (`pwl`)	`12 PWLv1 0)None`	Depends on current password level.	0-4 (or current password level)	The password level when the UPS starts up. Normally, this is set to `0`, so you must enter the appropriate password level before you program the UPS. `0` = None, `1` = User, `2` = Service and `3` and `4` = higher passwords. You can only change the setting to a password level you have already entered; for example, to change the setting to `2)Service`, you must first enter the Service password.
`13`	`modelname` (`mn`)	`13 Model Name [Model number]`	Change not allowed	0-16 characters	The Fortress model number and name.
`14`	`serialnumber` (`sn`)	`14 Serial Number [Serial number]`	Change not allowed	0-16 characters	Your unit’s serial number.
`15`	`unitidentify` (`id`)	`15 Unit ID`	User	0-31 characters	This is an identification string that you can configure for use with your network.
`16`	`fullload` (`l`)	`16 FullLoad% 100`	Change not allowed	Not applicable	The percent of the Fortress' power that your equipment is using.
`17`	`watts` (`w`)	`17 Watts 970`	Change not allowed	Not applicable	The Total "real power" your equipment is drawing from the Fortress.
`18`	`powerfactor` (`pf`)	`18 PF 0.69 Dist`	Change not allowed	Not applicable	The power factor of your equipment. This is the difference in the way it draws output volts and current. Power factor = parameter 17 divided by parameter 5. This parameter also tells whether power factor is leading (`Lead`), lagging (`Lag`) or distortion (`Dist`).
`19`	`crestfactor` (`cf`)	`19 CrestF 1.44`	Change not allowed	Not applicable	Crest factor.
`20`	`powerouts` (`pwro`)	`20 #PwrOut 0`	Service	0-65535	The number of power outages since you started the unit.
`21`	`overloads` (`ol`)	`21 #OvrLds 0`	Service	0-65535	The number of times the unit was overloaded since startup.
`22`	`systemhours` (`sh`)	`22 SysHrs 0`	Service	0-65535	The total number of hours the unit has operated.
`23`	`inverterminutes` (`im`)	`23 InvMin 1.0`	Service	0-6553.5	The number of minutes the unit has un on battery power since startup.
`24`	`badpassword` (`bp`)	`24 #BadPW 0`	Change not allowed	0-255	The number of times an invalid password was entered.
`25`	`batttesttime` (`btt`)	`25 BTTime 02:00`	User	00:00-23:59	The time of day when Fortress will perform the automatic battery test.
`26`	`batttestinterval` (`bti`)	`26 BTIntervl 7`	User	0-168	The number of days between battery tests. To disable the automatic battery test set this parameter to "`0`".
`27`	`keyclick` (`kc`)	`27 KeyClic 1)On`	User	0)Off-1)On	This parameter determines whether the Fortress will click when you press a button on the front panel.
`28`	`beepertone` (`bt`)	`28 BeepTone 0)Lo`	User	0)Lo-1)Hi	The pitch for the "beep" the Fortress sounds during alarms and battery operation. "`Lo`" is a low pitch; "`Hi`" is a high pitch.
`29`	`fan` (`fa`)	`29 Fan 1)Yes`	Change not allowed	0)No-1)Yes	This parameter enables the Fortress' fan.
`30`	`mindcv` (`mind`)	`30 MinDCV 30.0`	User	0.0-72.0	The minimum battery voltage measured since you started the Fortress or since the last time you used the `extendedhistory` command.
`31`	`maxdcv` (`maxd`)	`31 MaxDCV 38.0`	User	0.0-72.0	The maximum battery voltage measured since you started the Fortress or since the last time you used the `extendedhistory` command.
`32`	`minacvi` (`minvi`)	`32 MinACVI 90`	User	0-300	The minimum AC input voltage measured since you started the Fortress or since the last time you used the `extendedhistory` command.
`33`	`maxacvi` (`maxvi`)	`33 MaxACVI 132`	User	0-300	The maximum AC input voltage measured since you started the Fortress or since the last time you used the `extendedhistory` command.
`34`	`minacvo` (`minvo`)	`34 MinACVO 106`	User	0-300	The minimum AC output voltage measured since you started the Fortress or since the last time you used the `extendedhistory` command.
`35`	`maxacvo` (`maxvo`)	`35 MaxACVO 127`	User	0-300	The maximum AC output voltage measured since you started the Fortress or since the last time you used the `extendedhistory` command.
`36`	`minva` (`minva`)	`36 Min VA 0`	User	0-5000	The minimum volt-ampere output measured since you started the Fortress or since the last time you used the `extendedhistory` command.
`37`	`maxva` (`maxva`)	`37 Max VA 1420`	User	0-5000	The maximum volt-ampere output measured since you started the Fortress or since the last time you used the `extendedhistory` command.
`38`	`lowruntime` (`lr`)	`38 LowRntm 5`	User	0-255	When runtime (parameter 9) drops to the number of minutes shown in this parameter, the Fortress sounds a Low Runtime alarm. (See the User Guide.)
`39`	`autorestart` (`ar`)	`39 AutoRst 60`	Service	0-65200	When you have shut down the Fortress using an `off` or `shutdown` command or the remote shutdown on pin 1 (see sections Commands and Changing Remote Shutdown Settings (Parameters 82-84 and 85-87)), or when an alarm shuts down the Fortress, this is the minimum number of seconds the Fortress will remain off before it can restart automatically. To disable the automatic restart set this to "`0`".
`40`	`nomacvoltsin` (`nvi`)	`40 NomVIn 120`	Change not allowed	90-255	The nominal (rated) AC input voltage to the Fortress.
`41`	`nomacvoltsout` (`nvo`)	`41 NomVOut 120`	Change not allowed	90-255	The nominal (rated) AC output voltage from the Fortress to your equipment.
`42`	`lowvoltsout` (`lvo`)	`42 Low Vout 96`	Service	60-511	When the output voltage drops to the level programmed in this parameter, the Fortress will shut down and sound alarm "LU" (Low AC Output).
`43`	`boostvoolts` (`bsv`)	`43 Boost V 90`	Service	60-511	When the AC input voltage is below this level, the Fortress runs on battery power. When AC input voltage is above this voltage but below parameter 44, the Fortress runs on utility power but will boosts the voltage.
`44`	`bypassvolts` (`byv`)	`44 Bypass V 106`	Service	60-511	When the AC input voltage is above this level but below parameter 45, the Fortress will use utility power without boosting or bucking the voltage.
`45`	`buckvolts` (`bv`)	`45 Buck V 126`	Service	60-511	When the AC input voltage is above this level but below parameter 46, the Fortress will use utility power, but it will "buck" (reduce) the voltage.
`46`	`invertervolts` (`iv`)	`46 InverterV 147`	Service	60-511	When the AC input voltage is above this level, Fortress will run on battery power because the input voltage is too high.
`47`	`buckboosthyst` (`bbh`)	`47 BBHyst 2`	Service	1-15	Buck/boost hysteresis.
`48`	`ratedva` (`rva`)	`48 RatedVA 1420`	Change not allowed	150-6500	The maximum rated volt-amperes your Fortress can provide without sounding an "OL" (overload) alarm.
`49`	`ratedwatts` (`rw`)	`49 RatedWatts 1100`	Change not allowed	150-6500	The maximum rated watts your Fortress can provide without sounding an "OL" (overload) alarm.
`50`	`cblimit` (`cbl`)	`50 CBLimit 384`	Change not allowed	1-9999	The software circuit breaker limit.
`51`	`nomfrequency` (`nf`)	`51 Nom Freq 1)60`	Change not allowed	0)50-1)60	The frequency Fortress is programmed to expect as input and provide as output.
`52`	`autofrequency` (`af`)	`52 AutoFrq 1)Yes`	Service	0)No-1)Yes	When this parameter is set to `1)Yes`, the Fortress will automatically detect the frequency it receives during startup and program parameter 41 to that frequency.
`53`	`lowfrequency` (`lf`)	`53 LowFreq -3.00`	Service	0.25-4.00	When AC input frequency drops to this level, the Fortress will run on battery power because frequency is low. "`-3.00`" means 3 Hz below nominal frequency, parameter 51.
`54`	`highfrequency` (`hf`)	`54 HiFreq +3.00`	Service	0.25-4.00	When AC input frequency rises to this level, the Fortress will run on battery power because input frequency is too high. "`+3.00`" means 3 Hz above nominal frequency, parameter 51.
`55`	`slewrate` (`sr`)	`55 Slew Rate 50`	Service	2-255	The rate at which the Fortress' inverter tracks a varying AC input.
`56`	`phasewindow` (`pw`)	`56 PhaseWin 500`	Service	50-5000	This parameter helps determine how the Fortress' inverter will track the AC input.
`57`	`freqsensitivity` (`fs`)	`57 FreqSens 3`	Service	1-30	This parameter sets the Fortress' sensitivity to frequency glitches; the setting represents the number of cycles that the glitch must appear.
`58`	`linesensitivity` (`ls`)	`58 LineSens 10`	Service	1-127	This parameter sets the Fortress' sensitivity to line fault glitches.
`59`	`faultsensitivity` (`flts`)	`59 FaltSens 1)Hi`	Service	0)Lo-1)Hi	This parameter sets the Fortress' sensitivity to line faults.
`60`	`nomdcvolts` (`ndcv`)	`60 NomDCV 36.0`	Change not allowed	60-720	The Fortress' rated battery voltage.
`61`	`lowbattery` (`lb`)	`61 LowBatt 28.8`	Change not allowed	14.0-72.0	When battery voltage falls below this level, Fortress shuts down and sounds an "Lb" (Low Battery) alarm. See the User Guide.
`62`	`nearlowbattery` (`nlb`)	`62 NrLoBatt 32.4`	Change not allowed	14.0-72.0	When battery voltage falls below this level, Fortress sounds an "Lo" (Near Low Battery) alarm. See the User Guide.
`63`	`highbattery` (`hb`)	`63 HighBatt 46.8`	Change not allowed	14.0-72.0	When battery voltage rises above this level, Fortress sounds an "Hb" (High Battery) alarm. See the User Guide.
`64`	`maintenance-volts` (`mv`)	`64 Maint V 39.9`	Change not allowed	14.0-72.0	When battery voltage is at this level, the charger is in the "maintenance" mode.
`65`	`equalizevolts` (`ev`)	`65 Eqls V 43.2`	Change not allowed	14.0-72.0	When battery voltage is at this level, the charger is in the "equalize" mode.
`66`	`constantitime` (`cit`)	`66 ConITm 346`	Service	1-65535	The minimum number of seconds that the charger stays in constant current mode.
`67`	`constantvtime` (`cvt`)	`67 ConVTm 14400`	Service	1-65535	The number of seconds that the Fortress will stay in the constant voltage mode.
`68`	`equalizetime` (`et`)	`68 EqlzTm 64800`	Service	1-65535	The number of seconds that the charger will stay in the equalize mode.
`69`	`equalizeinterval` (`ei`)	`69 EqlzInvl 30`	Service	1-255	The number of days between automatic equalize.
`70`	`baudrate` (`bd`)	`70 BaudRt 2)1200`	Service	0)300-2)1200	When DIP switch 1 on the back of the Fortress is set to the left, this parameter sets the communication port’s baud rate (communication rate). `0` = 300 baud, `1` = 600 baud and `2` = 1200 baud. When the DIP switch is set to the right, baud rate is always 1200.
`71`	`wordformat` (`wf`)	`71 WordFmt 0)8N1`	Service	0)8N1-9)7S2	The data word format of the RS232 communication port. Settings: `8N1`, `8N2`, `7N1`, `7N2`, `7E1`, `7E2`, `7O1`, `7O2`, `7S1` and `7S2`. Changing the setting could cause communication problems. (`N` = no parity, `O` = odd, `E` = even, `S` = stick parity.)
`72`	`plugnplay` (`pnp`)	`72 PNP 1)Yes`	Service	0)No-1)Yes	This parameter enables and disables the automatic Windows 05® plug and play feature.
`73`	`transmitxhs` (`th`)	`73 TxHS 1)Yes`	Service	0)No-1)Yes	This parameter enables and disables transmit software handshake for communication. When this is set to `1)Yes`, the Fortress will transmit software handshaking characters (`XON`, `XOFF`) to the host when it is busy.
`74`	`receivexhs` (`rh`)	`74 RxHs 1)Yes`	Service	0)No-1)Yes	This parameter enables and disables receive software handshake for communication- When this is set to `1)Yes`, the Fortress will pause transmissions when it receives `XOFF` and transmit again when it receives `XON`.
`75`	`prompt` (`pr`)	`75 Prompt 1)Yes`	Service	0)No-1)Yes	This parameter determines whether your terminal or computer screen will display a "`=>`" prompt during RS232 communication.
`76`	`echoback` (`ec`)	`76 Echo 1)Yes`	Service	0)No-1)Yes	This parameter enables and disables character echo back during RS232 communication.
`77`	`automessage` (`am`)	`77 AutoMsg 1)Yes`	Service	0)No-1)Yes	This parameter determines whether the Fortress will send automatic status messages during RE232 communication.
`78`	`identifymessage` (`idm`)	`78 ID Msg 1)Yes`	Service	0)No-1)Yes	This parameter determines whether the Fortress will send an automatic ID message during startup.
`79`	`consolecontrol` (`cc`)	`79 Con Ctrl 15 Eco\|Err\|Msg\|P=>`	Service	1-15	This parameter enables and disables UPS messaging and echo back during RS232 communication.
`80`	`alarmconpolarity` (`ap`)	`80 AlmCPol 0)Neg`	Service	0)Neg-1)Pos	When this is set to `0)Neg`, Fortress closes the alarm contact (pin 5) during the alarms you set in parameter 81. When this is set to `1)Pos`, the contact is normally closed and it opens during the alarms. See section Changing the Settings for Alarm and Battery Contacts (Parameters 80 and 88-89).
`81`	`alarmcenables` (`ac`)	`81 AlmEnbl 11`	Service	0-65535	This parameter determines which alarms will activate the alarm relay contact (pin 5) at the Fortress' communication port. See section Changing the Settings for Alarm and Battery Contacts (Parameters 80 and 88-89).
`82`	`shutdownpolarity` (`sp`)	`82 ShdnPol 1)Pos`	Service	0)Neg-1)Pos	This parameter determines the polarity of the signal that will activate a remote shutdown using pin 1.
`83`	`shutdowndebounce` (`sdb`)	`83 ShdnDbnc 5.0`	Service	0.1-25.5	After a remote shutdown signal is detected on pin 1 (in Extended Signal Mode), this parameter determines how long the signal must be present before the Fortress will shut down.
`84`	`shutdowndelay` (`sdl`)	`84 ShdnDly 30.0`	Service	0.1-2000.0	After the Fortress recognizes a remote shutdown signal on pin 1, this is the number of seconds it will delay before shutting down. The pin 1 remote shutdown only works when the Fortress is in Extended Signal Mode. See section Changing Remote Shutdown Settings (Parameters 82-84 and 85-87).
`85`	`epopolarity` (`epop`)	`85 EPO Pol 0)Neg`	Service	0)Neg-1)Pos	This parameter determines when Fortress will start a remote shutdown based on pin 7. When this is set to `0)Neg`, Fortress will shut down when the pin shorts to pin 4. When this is set to `1)Pos`, Fortress will shut down when the contact opens. See section Changing Remote Shutdown Settings (Parameters 82-84 and 85-87).
`86`	`epodebounce` (`edb`)	`86 EPO Dbnc .2`	Service	0.1-25.5	The number of seconds a signal for the pin 7 remote shutdown must be present before the Fortress recognizes the signal.
`87`	`epodelay` (`edl`)	`87 EPO Dly .1`	Service	0.1-2000-0	After Fortress recognizes a shutdown signal on pin 7, this is the number of seconds it delays before shutting down.
`88`	`invcontpolarity` (`icp`)	`88 InvCPol 0)Neg`	Service	0)Neg-1)Pos	When this is `0)Neg`, Fortress closes the on battery contact (pin 3) when the Fortress runs on battery power. When this is `1)Pos`, the contact is normally closed and it opens during battery operation. See section Changing the Settings for Alarm and Battery Contacts (Parameters 80 and 88-89).
`89`	`invcontdelay` (`icd`)	`89 InvCDly 1.0`	Service	0.1-25.5	After the Fortress begins running on battery power, it will delay this many seconds before activating the inverter (on battery) contact on pin 3 of the communication port.
`90`	`powerontime` (`ont`)	`90 OnTime 08.00`	Service	00:00-23:59	When you are using Fortress' automatic startup feature, this is the time the Fortress will start. See section Automatic Startup and Shutdown (Parameters 90-93).
`91`	`ontimedays` (`ontd`)	`91 OnTmDays 0 SFTWTMS: 0000000`	Service	0-255	When you are using Fortress' automatic startup feature, this parameter determines which days the Fortress will start. See section Automatic Startup and Shutdown (Parameters 90-93).
`92`	`powerofftime` (`offt`)	`92 OffTime 17:00`	Service	00:00-23:59	When you are using Fortress' automatic startup and shutdown feature, this is the time when the Fortress will shut down. See section Automatic Startup and Shutdown (Parameters 90-93).
`93`	`offtimedays` (`oftd`)	`93 OffTmDays 0 SFTWTMS: 0000000`	Service	0-255	When you are using Fortress' automatic startup and shutdown, this parameter determines which days the unit will shut down automatically. See section Automatic Startup and Shutdown (Parameters 90-93).
`94`	`poweronmode` (`pom`)	`94 POMode 1)On`	Service	0)Off-1)On	This parameter determines whether the UPS will supply output when you turn it on.
`95`	`xferdelay` (`xd`)	`95 XferDly .5`	Service	0.1-25.5	The number of seconds the Fortress will wait after a power outage or power problem ends before switching from battery power back to utility power.
`96`	`tapswitchdelay` (`tsd`)	`96 TapSwDly .2`	Change not allowed	0.1-25.5	The number of seconds that the Fortress will delay before switching between battery power, boost, bypass (line) and buck.
`97`	`tapswitchphase` (`tsp`)	`97 TapSwPh 16`	Change not allowed	0-31	This parameter helps to govern how the Fortress switches between battery power, boost, bypass (line) and buck.
`98`	`guardpstart` (`gs`)	`98 GuardSt 27`	Change not allowed	0-31	This parameter helps to govern how the Fortress detects power problems.
`99`	`guardpend` (`ge`)	`99 GuardEnd 6`	Change not allowed	0-31	This parameter helps to govern how the Fortress detects power problems.
`100`	`chargedvbattery` (`chv`)	`100 ChargdV 25.6`	Change not allowed	25.6-55.2	When battery voltage reaches this level, the Fortress considers the batteries charged.
`101`	`runtimek1` (`rk1`)	`101 RntmK1 2000`	Change not allowed	0-65535	A factor for calculating runtime.
`102`	`runtimek2` (`rk2`)	`102 RntmK2 10`	Change not allowed	0-255	A factor for calculating runtime.
`103-109`	—	`- Reserved -`	—	—	These parameters are reserved for future use.
`110`	`cfacvin` (`vin`)	`110 CFACVIN 120`	Change not allowed	0-255	Calibration factor numerator for AC input voltage.
`111`	`cfacvid` (`vid`)	`111 CFACVID 123`	Change not allowed	0-255	Calibration factor denominator for AC input voltage.
`112`	`cfacvon` (`von`)	`112 CFACVON 120`	Change not allowed	0-255	Calibration factor numerator for AC output voltage.
`113`	`cfacvod` (`vod`)	`113 CFACVOD 105`	Change not allowed	0-255	Calibration factor denominator for AC output voltage.
`114`	`cfacaon` (`aon`)	`114 CFACAON 41`	Change not allowed	0-255	Calibration factor numerator for AC output current.
`115`	`cfacaod` (`aod`)	`115 CFACAOD 39`	Change not allowed	0-255	Calibration factor denominator for AC output current.
`116`	`cfdcvn` (`dcn`)	`116 CFDCVN 240`	Change not allowed	0-255	Calibration factor numerator for battery voltage.
`117`	`cfdcvd` (`dcd`)	`117 CFDCVD 194`	Change not allowed	0-255	Calibration factor denominator for battery voltage.
`118`	`referencenominal` (`rn`)	`118 RefNom 168`	Change not allowed	0-255	This parameter helps determine how the Fortress determines a line glitch.
`119`	`xfmrresistance` (`xr`)	`119 XfmrRes 50`	Change not allowed	0-255	Transformer resistance constant.
`120`	`inhibits` (`inh`)	`120 Inhibits 00h`	Change not allowed	0-255	This parameter is used for factory testing.

Automatic Startup and Shutdown (Parameters 90-93)

If you do not want the Fortress to run constantly, you can program it to startup and shut down automatically using parameters 0, 11, and 90-93. Just follow the steps below.

You must enter the Service password before you can change parameters 90-93. To enter the password, use the command pw 2639.
Using the display command, display parameters 0 and 11 to make sure the time and the day of the week are correct. (Note that parameter 0 shows the time in 24-hour or military time.) If both parameters are correct, go to step 2. If not, follow steps a-b:
1. Use this command to change the time: program time <new time>. Be sure to use the 24-hour system. For example, if the time is 9:30 a.m., use the command program time 09:30. If the time is 7:00 p.m., use the command program time 19:00.
2. To change the day of the week, use this command: program day <new day of week>. For the new day of the week, 0 = Sunday, 1 = Monday, 2 = Tuesday, 3 = Wednesday, 4 = Thursday, 5 = Friday, and 6 = Saturday. For example, if the day of the week is Monday, use the command program day 1.
Parameters 90-93 let you set up automatic startup and shutdown.

Parameter 91 (ontiniedays or ontd) lets you choose which days you want the Fortress to automatically shut down. When you receive the Fortress, this is set to 0, which means none of the days have been selected.

If you want the Fortress to start automatically every day, use this command: program ontd 127. If you only want Fortress to operate some days, use the table below. In the right column enter "0" for each day you do not want the Fortress to operate. For the days you do want the Fortress to operate, enter the day’s value from the second column. Then, add the right column and use this command to change the parameter setting: program ontd <total of right column>.

Day of Week	Value for that Day:	Enter "0" for days Fortress should NOT run; enter the value for days that Fortress SHOULD run
Sunday	1
Monday	2
Tuesday	4
Wednesday	8
Thursday	16
Friday	32
Saturday	64
TOTAL:

Example: If you wanted the Fortress to operate automatically Monday through Friday, you would write "0" next to Sunday and Saturday and the values next to the other day. 0 + 2 + 4 + 8 + 16 + 32 + 0 = 62, so you would use the command program ontd 62.

Parameter 90 (powerontime or ont) sets the time you want the Fortress to start automatically. When you receive the Fortress, this parameter is set to 8:00 a.m. If you want the Fortress to start at a different time, use this command: program ont <new start time>. Be sure to use 24-hour or military time. For example, if you want the Fortress to start at 9:00 a.m., use the command program ont 09:00. If you want the Fortress to start at 3:00 p.m., use the command program ont 15:00.
Parameter 92 (powerofftime or offt) sets the time you want the Fortress to shut down automatically. When you receive the Fortress, this parameter is set to 17:00, which is 5:00 p.m. If you want the Fortress to shut down at a different time, use this command: program offt <new shutdown time>. Be sure to use 24-hour or military time.
Parameter 93 (offtimedays or oftd) lets you choose which days you want the Fortress to shut down. When you receive the Fortress, this is set to 0, which means none of the days have been selected. If you want the Fortress to shut down automatically every day, use this command: program oftd 255.

If you only want Fortress to shut down some days, use the table used for parameter 91 to calculate the setting just as you did for parameter 91. If you want the Fortress to start and shut down on the same days, you can use the setting you calculated for parameter 91.
Clear the Service password using the clearpassword command.

Choosing Which Alarms Enable the Alarm Contact (Parameter 81)

When you receive the Fortress, the alarm contact (pin 5) only closes for the Low Battery, Near Low Battery, and Low Runtime alarms. This setting is important if you are using your free CheckUPS II Suite software package or other automatic shutdown software. However, if you are not using CheckUPS and you would like other alarms to close the contact, you can use parameter 81 to determine which alarms will close the contact. (See section Changing the Settings for Alarm and Battery Contacts (Parameters 80 and 88-89) for information about other settings that affect the alarm contact.)

No matter how you program parameter 81, when the UPS is off, the alarm contact will be open.

To program parameter 81, follow these steps:

Enter the Service password using the command password 2639.
Display parameter 81 using the display 81 command.

The next table will help you calculate the new parameter setting based on the alarms that you want to activate the contact. If you do not want any of the alarms to activate the contact, write "0" for the total. If you want some of the alarms to activate the contact, see the table to find the Alarm Value for each of these alarms; write the value for these alarms in the third column of the table. Write "0" for alarms that should not activate the contacts. Then, add the numbers in the third column. For example, to enable alarms A (Low Battery), B (Near Low Battery), and C (High Battery), write "1" for alarm A, "2" for alarm B, "4" for alarm C, and "0" for the rest of the alarms. The total is 7.

If you are using the Fortress with an AS/400, you should ONLY enable the alarm contact for the Low Battery, Near Low Battery, and Low Runtime alarms. In the blanks, A = 1, B = 2, D = 8, and C and E - K = 0. The total = 11.

Alarm	Alarm Value	Enter "0" to disable contact or the Alarm Value to enable it
Low Battery (A)	1
Near Low Battery (B)	2
High Battery (C)	4
Low Runtime (D)	8
Low AC Output (E)	16
Fan Malfunction (F)	32
Output Overload (G)	64
External Shutdown (H)	128
Calibration Lost (I)	256
User Test Alarm (J)	512
Replace Battery (K)	1024
TOTAL:

Now, change the parameter 81 setting to the total you found in step 3. To do this, use the program 81 <new setting> command.

Example: If you would like to activate the contact for alarms A, B and C and your total in step 3 was 7, enter the command program 81 7.
Use the display 81 command to display the parameter once more and confirm that you have entered the correct setting.
Clear the Service password using the clearpassword or cp command.

Changing the Settings for Alarm and Battery Contacts (Parameters 80 and 88-89)

Parameters 80 and 88-89 let you program how the alarm and battery contacts operate.

Alarm Contact (Pin 5)

When you receive the Fortress, a Low Battery Alarm will cause the normally open contact on pin 5 to close to common (pin 4). (Section Choosing Which Alarms Enable the Alarm Contact (Parameter 81) tells you how to activate the contact for other alarms.) The contact is normally open because parameter 80 is set to 0)Neg when you receive the Fortress. If you would like the contact to be normally closed and to open during the alarm, you must change parameter 80 to 1)Pos. No matter how you program parameter 80, when the UPS is off, the alarm contact will be open. To change the parameter, follow these steps:

Enter the Service password using the command password 2639.
Program parameter 80 to 1)Pos using this command: program 81 1.
Clear the password using the clearpassword or cp command.

On Battery Contact (Pin 3)

When you receive the Fortress, the on battery contact (pin 3) is a normally open contact that closes 15 seconds after the Fortress starts running on battery power. Using parameter 88, you can change the contact to a normally closed contact. Using parameter 89, you can adjust the 15-second delay.

Parameter 88 is set to 0)Neg when you receive the UPS. This means that the contact is normally open and that it closes when the Fortress runs on battery power. To change the contact to a normally closed contact that opens when the Fortress runs on battery, follow these steps:

Enter the Service password using the command password 2639.
Program parameter 88 to 1)Pos using this command: program 88 1. No matter how you program parameter 88, when the UPS is off,the inverter contact will be open.
Clear the password using the clearpassword or cp command.

After the Fortress begins running on battery power, parameter 89 determines how long the Fortress will wait before closing the on battery contact. When you receive the Fortress, this parameter is set to 15 seconds. You can decrease the delay to as little as 0.1 seconds or increase it to as much as 25.5 seconds. To do this, follow these steps:

Enter the Service password using the command password 2639.
To change the delay, enter the command program 89 <new delay in seconds>. For example, if you want the delay to be 20 seconds instead of 15 seconds, enter program 89 20.
Clear the password using the command clearpassword or cp.

Changing Remote Shutdown Settings (Parameters 82-84 and 85-87)

Pin 7 Shutdown

The Remote Shutdown available on pin 7 lets you shut down the Fortress' output power through a remote switch. The switch must have a set of contacts that can short pin 7 on the UPS communication port to pin 4 (common). (Use a shielded, single twisted pair cable to connect your switch to these pins.) The connection will shut down the UPS' output power to the protected equipment. When this happens, the UPS will sound alarm "Sd" for "shutdown" (Morse code alarm H). When you are ready to restart the UPS, the shutdown switch must remove the connection to pin 7 on the UPS communication port. Then, you can press the ( | ) button to restart the UPS.

You can change the way this feature operates by using parameters 85, 86, and 87.

Parameter 85 determines whether this shutdown works with a normally open or normally closed switch. When you receive the Fortress, it is programmed to expect a normally open switch, and the Fortress shuts down when the switch input is shorted to pin 4. You can change the Fortress to work with a normally closed switch. To do this, you must change the setting of parameter 85 from 0)Neg to 1)Pos. Follow these steps:

Enter the Service password using the command password 2639.
Change the parameter setting using the command program 85 1.
Clear the password using the command clearpassword or cp.

Parameter 86 determines how long the shutdown signal should be. In some environments with a lot of electrical noise, the noise could mimic the shutdown signal and cause a Fortress shutdown. To avoid this problem, you can increase the amount of time that the signal must be present before Fortress recognizes it. When you receive your Fortress, this parameter is set to 0.2 seconds. By changing the parameter value, you can decrease the required signal length to 0.1 seconds or increase it to as much as 25.5 seconds. To change the value, follow these steps:

Enter the Service password using the command password 2639.
Change the parameter setting using the command program 86 <new value in seconds>. For example, if you want to change the parameter value to 2 seconds, you would use the command program 86 2.
Clear the password using the command clearpassword or cp.

After the Fortress recognizes a shutdown signal, parameter 87 determines how long the Fortress will wait before shutting down. When you receive your Fortress, this parameter is set to 0.1 seconds. By changing the parameter value, you can increase the delay to as much as 2000 seconds (33 minutes). Follow these steps:

Enter the Service password using the command password 2639.
Change the parameter value using the command program 87 <new delay in seconds>. For example, if you want the Fortress to delay 3 seconds, use the command program 87 3.
Clear the password using the command clearpassword or cp.

Pin 1 Shutdown

If your Fortress is set to Extended Signal communication mode (see section Choosing a Communication Mode), remote shutdown is also available on pin 1. If the UPS is using battery power, a +12-volt signal applied to the pin for 5 seconds will shut down the UPS 30 seconds later. The UPS will automatically restart when the power outage ends (unless you have changed parameter 39).

You can change the way this feature operates by using parameters 82, 83 and 84.

Parameter 82 determines the type of signal on pin 1 that will start a Fortress shutdown. When you receive the Fortress, this is programmed to 0)Neg, which means ground or a -12V input causes the shutdown. If you change the parameter to 1)Pos, a +12V input shuts down the UPS. Note: +12V is available on pin 8 of the Fortress' port.

Enter the Service password using the command password 2639.
Change the parameter value using the command program 82 1.
Clear the password using the command clearpassword or cp.

Copyright

Best Power makes no claim on trade names of application products mentioned in this publication.

Best Power’s trademark ownership extends to its own products only.

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Acknowledgements

Graciously scanned and provided to the NUT Protocol Library by Chris McKinnon.