Emerson FB1100 Instruction Manual page 56

FB1100 Flow Computer Instruction Manual
D301752X012
November 2023
Figure 2-28. Connecting a Device to COM2 or COM3 Using RS-232
1
2
3
When connecting COM2 or COM3 to an RS-485 (2-wire) port on another device (for
example, a transmitter), use a cable with configurations as shown in
Note
Neither COM2 nor COM3 has its own GND terminal. Use either GND terminal on the COM1
terminal block.
42
RS-232 port (COM2) on FB device
RS-232 port on external device
RS-232 port (COM3) on FB device
Figure 2-29.
Installation