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To prevent accidental or unwanted changes to the program parameters, a provided jumper

may be installed across terminals 3 & 4. With this jumper installed, the numeric menu will

read “EP nn” instead of “OP nn”. All parameters can be viewed but no changes can be made.

2.1 Serial Port Programming

To change a parameter using the RS-232 serial port programming commands, connect a computer

terminal to the serial port cable. The terminal must have the proper Comm port settings to

communicate to the 1250B (see section 3.3). See Table 2.2 for a full listing of all programming

commands and syntax. At the command prompt, type a command followed by the new parameter

setting, using proper syntax as shown in Table 2.2. Typing the command only, without a new

parameter setting, will cause the 1250B to transmit the present setting for that parameter.

Table 2.2 Serial Programming Commands:

◊=space =enter

Command Syntax:

Function:

Explanation:

SETUP

Enter the Setup Mode

This command must be entered before

any other commands can be made.

EXIT

Re-starts the serial connection

Changes to comm. port settings will take

effect

RUN

Return to the Run Mode

Changes to settings will take effect

DISP

Displays all setup parameters

Each setup command is displayed with

the current parameter values following it

POS

Displays all current position

data

Angle, turns count, linear position, non-

linear position, tap position

RLYENA◊ON

Enables High/Low Relays

“ON” or “OFF” When enabled allows

setting relay limits

MODE◊nn

Scaled or segmented modes

See page 14 for details

COUNTS◊nn.nnn

Set counts per turn

n= a floating-point number, 5 digits max.

LEFTDIG◊n

Set number of digits to the left

of the decimal point

n= an integer from 0 to 5

ANAMIN◊nn.nnn

Set position value for minimum

analog output