Thanks...here’s what happened. BTW, I couldn’t get anything to work with switch 10 off.
ED15-2 is connected to ED15-1 and ED15-1 is connected to the board.
ED15-2, switches 1, 3, 10-12 on, I get sliders 5-8 on the board.
ED15-1, switches 1, 10-12 on...no DMX indicator light, all 4 channel...