ADLINK Technology M-322 - Page 33

Connectors & Jumpers 19
M-322
Serial Port Connectors RS-232 (COM2-4)
Serial Port Connectors RS-422/485 (COM4)
See “COM4 RS-232/422/485 Select (JCOMPWR5, 6, 7)” on page 25
for RS-232/422/485 mode jumper settings.
Pin # RS-232
1 DCD, Data carrier detect
2 RXD, Receive data
3 TXD, Transmit data
4 DTR, Data terminal ready
5 GND, ground
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 RI, Ring indicator
Pin # RS-422 RS-485
1 TXD- TXD-
2 TXD+ TXD+
3RXD- NC
4RXD+ NC
5NC NC
6NC NC
7NC NC
8NC NC
9NC NC
1
9
2