可编程序控制器在切石机上的应用
The Application of Programmable Controller to a Stone-Cutted Machine
Abstract
将可编程序控制器（PC）成功地应用于圆盘切石机上.实现了全自动切割过程；对PC外围电路具有故障诊断功能；可指示维修期限.给出了PC内部“COunTEr”和“TIMEr”预设值的外部调整方法，以及I/O信号扩展的一种解决办法. The authors successFully apply a Programmable controller to a circular stone-cutted machine,realizing automation of the process of cutting stone.The authors develope two systems: one can diagnose Faults of the external circuit of the PC, the other can display maintenance dateline of the PC.In the end, we provide a particular method For the external adjustment of the preset value of the Counter and Timer of the PC, and a method of I/O expansion.