Siemens RUGGEDCOM RMC20 - Page 30

Communication Ports
3.2.2RS485/422 Data Ports
< 1219 m (4000 ft)
120Ω 10nF
1
2
3
5
5
6
4
1
RUGGEDCOM RMC20 Device With Built-In Termination
2
Common (Isolated Ground)
3
Negative
4
Positive
5
Shield to Earth (Connected At a Single Point)
6
RS485 Devices (32 Total)
Figure3.5 Recommended RS485 Wiring
RUGGEDCOM RMC20
Installation Manual, 04/2021, C79000-G8976-1007-10
21