SolaX Power X3-Hybrid-G4 Serie Manuel D'installation page 72

• COM port connection
1. Pin definition for COM
Item
Pin
Drycontact
Pin Definition
_A(in)
NOTE: Pin 3 (+13V) and pin 6 (GND) cannot be connected together in the process of cable
connection. Please wrap the two pins with insulating tape if the two pins do not need to be
connected.
* The COM port of the inverter is not an Ethernet port, and a router cannot be connected
to it.
* When the PV, BAT or AC is powered on and the LCD screen doesn't light up, please cut
off the power immediately and check the wiring of the COM port of the inverter.
* You can control the inverter and other external devices through the COM interface.
Professional users can use pins 4 and 5 to realize data acquisition and external control
functions. The communication protocol is Modbus RTU. For details, please contact us.
2. Situation of external equipment controlled by the inverter
USB to RS485
converter
1 2
Drycontact
+13V
_B(in)
Data Read
COM
3 4
485A 485B
5 6
Drycontact
GND
_A(out)
Adapter Box
7 8
Drycontact
_B(out)
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