22
Doc. Ref. XGC-320-100119
V100 (2019-11)
2) The relays are disabled by applying a continuous ground to
pin # 9. This will prevent any switching of the relay contac-
tors during operation of the XGC-320.
9-pin D-sub male (Mating connector provided by user).
Pin
no.
Pin description
4 Wire RS485
Pin description
2 Wire RS485
1
RS485 RDA (- ) Input
RS485 DATA A (-) Input/output
2
RS485 RDB (+) Input
RS485 DATA B (+) Input /
output
3
RS485 TDA (- ) Output
4
RS485 TDB (+) Output
5
RS232 TX
When using RS232 serial
comm., this pin is typically
connected to pin #2 of your PC
serial port 9-pin D-sub con-
nector
RS232 TX
When using RS232 serial
comm., this pin is typically
connected to pin #2 of your PC
serial port 9-pin D-sub con-
nector
6
RS232 RX
When using RS232 serial
comm., this pin is typically con-
nected to pin #3 of your PC
serial port 9-pin D-sub con-
nector
RS232 RX
When using RS232 serial
comm., this pin is typically con-
nected to pin #3 of your PC
serial port 9-pin D-sub con-
nector
7
analog output signal (non-
linear, linear, or log-linear)
analog output signal (non-
linear, linear, or log-linear
8
analog output signal ground
Also when using serial comm.,
this pin is typically connected
to pin # 5 of your PC RS232
serial port 9-pin D-sub con-
nector, or ground pin of your
RS485 converter
analog output signal ground
Also when using serial comm.,
this pin is typically connected
to pin # 5 of your PC RS232
serial port 9-pin D-sub con-
nector, or ground pin of your
RS485 converter
9
relay disable
The relays are disabled by
applying a continuous ground
relay disable
The relays are disabled by
applying a continuous ground
Relay Connector
There are two single-pole double-throw relays (SPDT), rated at
1 A at 30 V (dc) resistive, or ac non-inductive.