Siemens RUGGEDCOM RX1400 Installation Manual page 26

Chapter 3
Communication Ports
2
1
Figure 16: Recommended RS485 Wiring
1. RX1400 Device 2. Common (Isolated Ground)
6. RS485 Devices (32 Total)
20
3 5
4
120Ω 10nF
3. Negative
5
120Ω 10nF
4. Positive 5. Shield to Earth (Connected At a Single Point)
RUGGEDCOM RX1400
Installation Guide
6
Serial Ports