Rs-422/485 Serial Port Connectors (Com3, Com4); Figure 3-17: Rs-422/485 Serial Port Pinout Locations; Table 3-7: Rs-422/485 Serial Port Pinouts - IEI Technology DRPC-120-BTi User Manual

3.9.5 RS-422/485 Serial Port Connectors (COM3, COM4)

CN Label: COM3 and COM4
CN Type: DB-9 connectors
CN Location: See Figure 1-2
CN Pinouts: See Table 3-7 and Figure 3-17
RS-422/485 serial port devices can be attached to the DB-9 ports on the front panel.
Pin RS-422
1
RS-422TX-
2
RS-422TX+
3
RS-422RX+
4
RS-422RX-
5 GND
6 --
7 --
8 --
9 --

Table 3-7: RS-422/485 Serial Port Pinouts

Figure 3-17: RS-422/485 Serial Port Pinout Locations

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DRPC-120-BTi Embedded System
RS-485
RS-485D-
RS-485D+
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