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Emerson FBxRemote I/O Quick Start Guide
D301902X012
March 2021
8
COM2 Configured as RS-485 (2-wire)
1 RS-485 (2-wire) port on device
2 Connect cable shields to suitable Instrument Earth connection point
COM3 Configured as RS-485 (2-wire)
1 Enable AC termination using switch
2 RS-485 bus, twisted pair required
3 Connect cable shields to suitable Instrument Earth connection point