Emerson FB3000 Instruction Manual page 44

FB3000 RTU Instruction Manual
D301851X012
November 2023
When connecting COM1 to another device using RS-485 (4-wire), use a cable with
configurations as shown in
Figure 2-21. Wiring COM1 on the CPU Module for RS-485 (4-wire)
1
2
30
Figure
RS-485 (4-wire) port on device
Connect cable shields to suitable Instrument Earth connection point
2-21:
Installation