Okuma Alarm-A 1747 No tailstock quill advance answer
Tailstock spindle in-position answer signal is not input within 60[s] after the tailstock spindle advance command M56 has been executed.
Code
2->Tailstock spindle in-position answer signal is not input within 60[s] after the tailstock spindle advance command has been executed.
3->Tailstock spindle in-position answer signal is not input within setting value of parameter after the tailstock spindle advance cmmand has been executed.
Probable Faulty Locations
Faulty adjustments of tailstock spindle in-position confirmation LS
Measures to Take
Adjust the sizing limit switch and overtravel limit switch so that they come ON at the same time when the tailstock spindle is advanced until it touches the workpiece.