2.2.11.1 Rs485 - Modbus® Rtu - Eaton EMR-3MP0 Installation, Operation And Maintenance Manual

2 Hardware
2.2 EMR-3MP0 – Installation and Wiring
2.2.11.1 RS485 - Modbus® RTU
Ensure the correct tightening torques.
Fig. 26: Modbus® RTU – Terminal Marking
Fig. 27: Modbus® RTU – Pin Assignment
The Modbus® connection cable must be shielded. The shielding has to be fixed at the
screw that is marked with the ground symbol at the rear side of the device.
The communication is Half-Duplex.
94
WARNING!
Protective Relay
+5V
120Ω
Protective Relay
+5V GND
R1 = 560Ω
R1 R1
R2 = 120Ω
R2
1 2 3 4 5
NOTICE!
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0.3 Nm
2.65 lb⋅in
0.23 Nm
2.03 lb⋅in
GND
6
EMR-3MP0