Emerson FB1200 - Section 2: Installation; Hazardous Locations; Environmental Specifications

FB1200 Flow Computer Quick Start Guide
D301786X012
November 2023
15
1
RS-485 (4-wire) port (COM1) on FB device
2
RS-485 (4-wire)-port on external device
Note: In earlier standards, RS-485 (4-wire) was referred to as RS-422.
1
RS-485 (2-wire) port (COM1) on FB device
2
RS-485 (2-wire) port on external device