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User Manual
EM100 Mini Inverter
35
3.2.10.6 Wiring Communication Terminal
1. Refer to the Figure 3-19 for connecting single inverter to PC/PLC:
Figure 3-19 RS485 and Single Inverter Connection
2. Refer to the Figure below for connecting multi-inverter to PC/PLC:
When PLC communicates with multi-inverter, connect the RS485 Communication
interface A+ of inverters to A+
,
A- to A-. Only switch S1 ON ( S1 switch is the terminal
resistor of the inverter on the far end), start internal 120
Ω
terminal resistor. See Figure
3-20 for connecting multi-inverter to PC/PLC:
Figure 3-20 RS485 and Multi-inverter Connection
3. Refer to the Figure 3-21 for connecting inverter to PC/PLC via RS485/RS232
converter
Figure 3-21 Connecting Inverter to PC/PLC via RS485/RS232 Converter
Remarks:
For the applications with serious electromagnetic noise, please ground GND of each
communication point together.