Operation | 28
VOLTAGE AND CURRENT READINGS = VLT
There is no SET command.
The QUERY command requires a single parameter one character in length representing the parameter being requested.
Command
Parameters
Query Command Sequence:
?VLTx
Unit Response:
?VLTxddd
x = Requested voltage or current
a = PSA 5.5V b = PSA 24.5V
c = PSB 5.5V d = PSB 24.5V
e = A1 ma f = A2 ma
g = A3 ma h = A4 ma
ddd = voltage in tenths of a volt or current in milliamps
EXAMPLES
The following are typical commands and responses showing the ASCII printable characters. The address is 65 Decimal,
41 Hex, ASCII code ‘A’ for these examples.
A) Set Amplifier 2 Current Limits, low = 000 ma, high = 999 ma
Remote Command Sequence: {A$LIM2L000H999}&
Unit Response: {A$LIM}b
B) Query Alarm Status Combined. The unit returns that there are no Alarms.
Remote Command Sequence: {A?ALR}z
Unit Response: {A?ALR000}K
RS422 BUS TERMINATION
A jumper selectable 120 ohm termination resistor is connected across the DATA IN +/- and DATA OUT +/- terminals.
Installing E1 places the resistor across the DATA OUT terminals and E2 across the DATA IN terminals.
RS485 BUS TERMINATION
A jumper selectable 120 ohm termination resistor is connected across the DATA +/DATA - terminals. Installing E1 places
the resistor across the terminals.
REMOTE INTERFACE CONNECTIONS
Summary Alarm Connector (J1) -
pin designations are indicated in Table 3-1.
TABLE 3-1. SUMMARY ALARM OUTPUTS (J1)
DESCRIPTION
PINS
NORMAL
FAULT
SUMMARY ALARM
4,5
OPEN
CLOSED
SUMMARY ALARM
5,6
CLOSED
OPEN
