User Manual of EM730/EM730E Series Inverter 3.3.7 Wiring of 485 communication terminals inverter. The online control of the host (PC or PLC controller) and inverter is performed through The communication terminals A+ and A- are the RS485 communication interfaces of the the connection and communication with the host. The connection of the RS485 and RS485/RS232 adapters to EM730/EM730E series inverter is shown in Fig. 3-16, Fig. 3-17 and Fig. 3-18. Direct connection of the RS485 terminal of a single inverter to the host for communication:
Inverter A+ + terminal RS485 communicati on interface ON GND S1 GND A- - terminal of host Fig.3-16 Communication Terminal Wiring of Single Inverter Connection of the RS485 terminals of multiple inverters to host for communication: 44 M1 Inverter GND V I J7 M1 is for analog voltage output M1 is for analog current output