Emerson FB3000 RTU Instruction Manual
D301851X012
May 2022
28
Installation
When connecting COM2 to an RS-485 (2-wire) port on another device use a cable with
configurations as shown in
Figure 2-22
:
Figure 2-22: COM2 Configured as RS-485 (2-wire)
1
RS-485 (2-wire) port on device
2
Connect cable shields to suitable Instrument Earth connection point
Regardless of the interface standard – RS-232, RS-485 (4-wire), or RS-485 (2-wire) – you must use
FBxConnect to configure the port for proper usage.
Содержание FB3000
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