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Electrical Connection
8.6 Communication Connection
The communication connections are located in the COM, BMS, Meter/CT, CAN1, CAN2,
DRM, and OFF communication terminals. The diagram of the completed communication
connection is shown below:
COM BMS Meter/CT
CAN1
CAN2 DRM OFF
Figure 8-30 The completed communication connection
8.6.1 COM Communication Connection
The COM terminal is mainly used for communication between the inverter and other
external devices, such as generator, SolaX Adapter Box G2, EV-Charger, DataHub, etc.
The communication protocol is Modbus RTU. For detailed applications of the generator,
Adapter Box G2, AC EV-Charger, and DataHub, see "15 Appendix".
NOTICE!
• The cable length for COM communication connection shall not exceed 30 meters.
Pin assignment of COM terminal
Table 8-6 Pin assignment of COM terminal
Pin Pin assignment Description
1 Drycontact_A(in)
For system switch connection
2 Drycontact_B(in)
3 +13V
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