Connecting To Com1 - Emerson FB1100 Instruction Manual

Emerson FB1100 Flow Computer Instruction Manual
D301752X012
August 2020
2.13.1

Connecting to COM1

COM1 can be configured for RS-232, RS-485 (2-wire) or RS484/422 (4-wire) communications.
When connecting COM1 to another device using RS-232, use a cable with configurations as shown
in Figure
Figure 2-27: Connecting a Device to COM1 Using RS-232
1
2
When connecting COM1 to another device using RS-485/422 (4-wire) use a cable with
configurations as shown in
Figure 2-28: Connecting a Device to COM1 Using RS-485/422 (4-wire)
1
2
38
2-27:
RS-232 port (COM1) on FB device
RS-232 port on external device
Figure
RS-485/422 (4-wire) port (COM1) on FB device
RS-485/422 (4-wire) port on external device
2-28:
Installation