Rs-422/485 Serial Port; Figure 3-19: Rs-422/485 Serial Port Locations; Table 3-18: Rs-232 Serial Port Pinouts; Table 3-19: Rs-422/485 Serial Port Pinouts - IEI Technology SPCIE-C246 User Manual

Pin Description
1 DCD
3 RXD
5 TXD
7 DTR
9 GND

Table 3-18: RS-232 Serial Port Pinouts

3.2.18 RS-422/485 Serial Port

CN Label: COM4
CN Type: 4-pin wafer, p=2.00 mm
See Figure 3-19
CN Location:
CN Pinouts: See Table 3-19
Each of these connectors provides RS-422/485 connections.

Figure 3-19: RS-422/485 Serial Port Locations

PIN NO. DESCRIPTION
1 RXD422-
2 RXD422+
3 TXD422+/TXD485+
4 TXD422-/TXD485-

Table 3-19: RS-422/485 Serial Port Pinouts

Use the optional RS-422/485 cable to connect to a serial device. The pinouts of the
D-sub 9 connector are listed below.
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SPCIE-C246 Full-size PICMG 1.3 CPU Card
Pin Description
2 DSR
4 RTS
6 CTS
8 RI
10 GND