Manual

Control Commands

All commands in the following tables are preceded by the start character (>) and unit number

and succeeded by the two character checksum and carriage return.

Command Response Description

RSTa A RESET COMMAND

where “a” determines functions

to be performed.

Digit “a” = 1 - Reset Totalizer

= 2 - Unlatch Totalizer Output

= 3 - Reset Totalizer and Unlatch Totalizer Output

= 4 - Unlatch Rate Alarms

= 5 - Reset Totalizer & Unlatch Rate Alarms

= 6 - Unlatch Totalizer Output & Rate Alarms

= 7 - Reset Totalizer, and Unlatch Totalizer Output and Rate Alarm

EPM A ENTER PROGRAM MODE

PEX A EXIT PROGRAM MODE

Query Run Data Commands

This classification of commands allows the computer to read run data information such as

status, count, rate, setpoint, etc. These commands are valid in run mode only, except for QST

(query status), which is valid in all modes of operation.

The following Query Run Data commands are supported:

Command Response Description

QST ASTabcd QUERY STATUS

where a = Current Mode

= R - Run Mode

= P - Program Mode

b = Totalizer Output Status

= A - Output On

= N - Output Off

c = Rate High Alarm Status

= A - Alarm On

= N - No Alarm

d = Rate Low Alarm Status

= A - Alarm On

= N - No Alarm

QRT ARTaaaaaa QUERY RATE

where aaaaaa = Rate

RS-485 SERIAL COMMANDS