S7系列PLC电气控制设计与应用 第5讲 S7-200在定长切割中的应用

S7-200's Application in the Constant-length Cutting

从硬件角度来讲,PLC都会内置一些端口用于高速脉冲输入,其结构与普通的数字量不同。从软件角度来讲,PLC都会采用特殊的高速计数器指令,来进行中断处理。本文介绍了S7-200在定长切割中的应用。

From thehardwareperspective, PLCwill beconfigured with somebuiltin portsforhigh-speed pulseinput which is same as the structure of digital input. Fromthesofiwareperspective, PLCwill adopt aspecialhigh-speed counterinstr uctiontotheinterrupt handler. This paperdescribesST-200＇ s application in the constant-length cutting.