ADLINK NuPRO-A331 - Manual (Page 37)

Hardware Information 23
NuPRO-A331
COM1/2 Connector (RS-232/422/485/485+) (CN6/10)
(2x5 box header, 2.54mm pitch)
Note: See “COM1/2 Mode Jumper Settings” on page 28 for
instructions on how to set COM1/2 to RS-232/422/485/485+ mode.
COM3/4/5/6 Connectors (RS-232) (CN18/17/14/13)
(2x5 box header, 2.00mm pitch)
Pin # RS-232 RS-422/485+ RS-485
1 DCD TXD- Data-
2 DSR NC NC
3 RXD TXD+ Data+
4 RTS NC NC
5 TXD RXD+ NC
6 CTS NC NC
7 DTR RXD- NC
8 RI NC NC
9 GND GND GND
10 NC NC NC
Pin # RS-232 Signal
1 DCD
2 DSR
3 RXD
4 RTS
5 TXD
6 CTS
7 DTR
8 RI
9 GND
10 NC
1 2
9 10
1 2
9 10