可编程控制器--位指令知识 课件.ppt可编程控制器西门子S7-300/400PLC实践与应用L1()S1()S2()L2()电路图基本逻辑指令:与,>=1= = =&= = = ()S3()S4()ORAND基本逻辑指令:异或(XOR)X = =>=1=&& = ,置位,复位(S)&(R)>=()&==.====()()() I I = M M I I = M M = Q &&=FBD主控继电器功能MCR<&&>&=&==FBDMCRA // //允许MCRMCR( // //NO触点= //输出线圈= // // //置位输出)MCR // // //紧急触点= //输出线圈MCRD //取消STLLAD(MCRA)()()(S)()(MCR<)(MCRD)(MCR>)(不依赖于RLO)(JMP)work2::::NetworkxNEW1()....NEW1&=::::work1 work2::::NetworkxNEW1: =
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