COM2 Configured as RS-485 (2-wire)
1
RS-485 (2-wire) port on device
2
Cable shield connection to chassis ground (use either pin 19 or 20)
COM3 Configured as RS-485 (2-wire)
1
Enable AC termination using switch
2
RS-485 bus, twisted pair required
3
Cable shield connection to chassis ground (use either pin 19 or 20)
FB3000 Personality Module Field Installation Guide
D301872X012
June 2021
7