Rear panel j2 connector, 1 remote output voltage programming select, 2 remote output current limit programming select – Xantrex Technology XFR 2800 User Manual

Page 24: 3 control ground, 4 no connection, 5 voltage program signal return, 6 output voltage programming input, 7 current program signal return, 8 output current limit programming input, 9 voltage monitor signal return