Teleorigin RB IndustrialRT User Manual page 8

Pinout of 10-pin connecor:
Pin number Name
1 RTS
2 TX
3 RX
4 GND
5 A+
6 B-
7 GND
8 DI
9 OC2
10 OC1
Note: Modem can't be used with RS232/RS485 serial cables longer than 3 m.
Direction
OUT
OUT
IN
OUT
-
-
-
IN
OUT
OUT