Follow the instructions of the electric energy meter to connect the phase line and the neutral line, and then connect 485A+ and 485B- to RS485A and RA485B of RS485-LN respectively.
In accordance with the instructions of the power meter to connect the phase and zero lines, and then 485A plus 485B - respectively, the RS485A and RA485B of RS485-LN.
Connect the phase line and zero line according to the instructions of the watt hour meter, and then connect 485a + and 485b - to rs485a and ra485b of rs485-ln respectively.<br>