Connecting To Com1 - Emerson FB3000 Instruction Manual

Figure 2-16: Configuring a Port in FBxConnect

Connecting to COM1

Using the CPU personality module, you can configure the COM1 port as RS-232, RS-485 (4-wire), or
RS-485 (2-wire) communications.
When connecting COM1 to another device using RS-232, use a cable with configurations as shown
in Figure
Figure 2-17: COM1 Configured as RS-232
1
2
When connecting COM1 to another device using RS-485 (4-wire), use a cable with configurations
as shown in
Installation
2-17:
RS-232 port on device
Connect cable shields to suitable Instrument Earth connection point
Figure 2-18:
Emerson FB3000 RTU Instruction Manual
D301851X012
May 2022
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