User Manual
Universal Serial/PROFIBUS DP Gateway
GT200-DP-RS
WWW.SSTCOMM.COM
7
2.5.3 RS-485/RS-422 Interface
GND
D-
D+
1
2
3
4
5
R-
R+
Pin
Description
1
R-, RS-422 Receive-
2
R+, RS-422
3
GND
4
D-, RS-485/RS-422 Transmit-
5
D+, RS-485/RS-422T
2.5.4 RS-232 Interface
1
2
3
TX
RX
GND
Pin
Description
1
TX, connected to user’s device RS-232 RX
2
RX, connected to user’s device RS-232 TX
3
GND, connected to user’s device RS-232 GND