User`s manual

PCA-6145 User’s Manual 22
Table 2.2: Serial port connections (COM1, COM2)
Connector Address
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 assign-
ments for the card's RS-232 port:
Table 2.3: RS-232 connector pin assignments
Pin Signal
1DCD
2RX
3TX
4DTR
5GND
6DSR
7RTS
8CTS
9RI