LINCHR H Series, User Manual

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The wiring between the smart meter and the charger is as follows:
The charger signal port "4" (RS485 signal A1) is connected with the electricity meter signal port "24" (RS485
signal A);
The charger signal port "5" (RS485 signal B) is connected with the electricity meter signal port "25" (RS485
signal B);
Connection between the charger and current transformer: the charger and current transformer are connected by
RS485 communication cable, the charger provides 12V power supply to current transformer, and the charger
signal line is shown in the following figure:
The charger signal port "4" is RS485 signal A1 (red arrow in above figure);
The charger signal port "5" is RS485 signal B (blue arrow in above figure);
The charger signal RS485 signal A1 is added with 120Ω terminal resistance.
The charger signal port "6" is +12V;
The charger signal port "8" is GND;