Fronius IG-TL Serie Manual De Instrucciones página 17

General hardware The 'OUT' serial interface is designed for an RS 422 8-pin RJ 45 plug.
data The pins for the 'OUT' serial interface are assigned as follows:
Pin
1 and 8
2 and 7
3
4
5
6
Power supply
Earth
RxD+
TxD+
TxD-
RxD-
11
Signal designationSignal description
A com card provides a supply voltage
of: 10 - 12 V DC / 300 mA
positive receive line RS 422
positive transmit line RS 422
negative transmit line RS 422
negative receive line RS 422