Specifications

18 PCA-6151 User's Manual
Serial port connections (COM1, COM2)
Connector Function
COM1 RS-232
COM2 RS-232/422/485
RS-232 connection (COM1)
Different devices implement the RS-232 standard in different
ways. If you are having problems with a serial device, be sure to
check the pin assignments for the connector. The following table
shows the pin assignments for the card’s RS-232 port:
RS-232 connector pin assignments
Pin Signal
1 DCD
2RX
3TX
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9RI