Machine Hitachi Seiki VA-35 with Micon 8 and Fanuc 6MB.
For some reason Jog is active even when the mode selector is set to hand wheel, mdi, memory or edit. I checked Diagnostic #105 and #41 and there is a steady 1 on bit 2. The mode selector knob seems to work as I also get a 1 on the other bits when it is set to handle, mdi etc. I tried to disconnect the C02 Honda plug from the NC, got the expected alarms, but still the 1 on bit 2 in Diagnostic #41 and #105. This means the signal is generated not by the mode selector but somewhere else. The only manual I have for the Micon 8 is some brief instructions regarding the tool changer. I do have a wiring diagram and ladder in japanese, but dont know what to make of it.
On the Fanuc side, I dont know if diagnostic 41 and 105 is only showing what the NC is receiving from the operator panel or if it is also showing what some relay is outputting? When I disconnected the C02 honda plug DGN 41 and 105 did not reflect when turning the mode selector. Only the steady 1 for the jog mode. If DGN is only showing the NC receiving the signal and NOT another relay it would seem logic that the signal receiver for the jog signal is bad. If so how would I track it down? Or would I have to replace the whole board?
Any ideas?
Cheers,
Andy