this design is mainly the grinder control wiring's transformation, transforms the tradition black-white control controls with the programmable controller. In the tradition black-white control's grinder line, the wiring is very tedious, in presents the breakdown time overhauls is quite complex; The engine bed equipment's control wiring which controls with PLC, the wiring is more convenient, the energy basic may place in the programming aspect, in the overhaul aspect, may act according to PLC on the control panel the I/O indicating lamp and the breakdown phenomenon, may find out the fault point very quickly. In the engine bed line's improvement aspect, the traditional relay's improvement needs to meet nearly the control wiring, but controls with PLC the engine bed equipment, only need change some lines, more importantly was good the programming procedure according to the request compilation. Now on numerically-controlled machine tool's control wiring basically is the programmable controller which uses.
