IEI Integration PCIE-H610 - Manual (Page 46)

PCIE-H610 PICMG 1.3 CPU Card
Page 31
3.2.16 Serial Port Connector, RS-422/485
CN Label: COM3
CN Type: 4-pin wafer
CN Location: See Figure 3-17
CN Pinouts: See Table 3-17
This connector provides RS-422 or RS-485 communications.
Figure 3-17: RS-422/485 Connector Location
Pin Description
1 RXD422-
2 RXD422+
3 TXD422+/TXD485+
4 TXD422-/TXD485-
Table 3-17: RS-422/485 Connector Pinouts
Use the optional RS-422/485 cable to connect to a serial device. The pinouts of the DB-9
connector are listed below.
RS-422 Pinouts RS-485 Pinouts
Table 3-18: DB-9 RS-422/485 Pinouts