Page 6-1
Manual 00650-519-1
Chapter 6: Connector Pin Assignments
The popular 9-pin D subminiature connector is used for interfacing to communication lines. The
connector is equipped with 4-40 threaded standoffs (female screw lock) to provide strain relief.
Pin No.
RS422 Four-Wire
RS485 Two-Wire
1
Rx- Receive Data
TRx+
2
Tx+ Transmit Data (Output)
3
Tx- Transmit Data
4
Not Used
5
Gnd Isolated Common (Ground)
Ground
6
Not Used
7
Not Used
8
Not Used
9
Rx+ Receive Data (Input)TRx -
TRx-
Table 6-1:
Connector Pin Assignments
Note
If the unit is CE-marked, then CE-certifiable cabling and breakout methodology (cable shields
grounded at the connector, shielded twisted-pair wiring, etc) must be used.