Emerson FB1200 Instruction Manual page 79

See the
Feb. 2017) for details on installing the 4088B.
1.
2.
3.
I/O Configuration and Wiring
Rosemount™ 4088 Multivarible™ Transmitter Reference Manual
Using twisted pair wire, connect the RS-485 terminals for COM3 to the RS-485 terminals on the
4088B as shown in the graphic.
Set switches on the 4088B for bus termination or use a 120 ohm resistor.
Use FBxConnect software to configure COM3 for RS-485. In particular, enable termination for
the port.
Emerson FB1200 Flow Computer Instruction Manual
(00809-0100-4088, Rev CB,
D301782X012
March 2019
73