产品描述:330101-00-16-10-02-00
日本的FANUC公司、立石公司、三菱公司、富士公司等所生产的PLC产品,都采用梯形图编程。在用编程器向PLC输入程序时,一般简易编程器都采用编码表输入,大型编程器也可用梯形图直接输入。在众多的PLC产品中,由于制造厂家不同,其指令系统的表示方法和语句表中的助记符也不尽相同,但原理是完全相同的。在本书中我们以FANUC-PMC-L为例,对适用于数控机床控制的PLC指令作一介绍。在FANUC系列的PLC中,规格型号不同时,只是功能指令的数目有所不同,如北京机床研究所与FANUC公司合作开发的FANUC-BESK PLC-B功能指令23条,除此以外,指令系统是完全一样的。
在FANUC-PMC-L中有两种指令:基本指令和功能指令。当设计顺序程序时,使用最多的是基本指令,基本指令共12条。功能指令便于机床特殊运行控制的编程,功能指令有35条。
在基本指令和功能指令执行中,用一个堆栈寄存器暂存逻辑操作的中间结果,堆栈寄存器有9位(如图1所示),按先进后出、后进先出的原理工作。当前操作结果压入时,堆栈各原状态全部左移一位;相反地取出操作结果时堆栈全部右移一位,最后压入的信号首先恢复读出。
WOODWARD 9905-760
WOODWARD 5501-376
WOODWARD 5466-031
WOODWARD 9905-968
WOODWARD 9905-969
WOODWARD 9905-970
WOODWARD 9905-971
WNTC 4045E
VNTV C4006
VFTV4002B
Cegelec m73-60001
Cegelec cools mae95-07
Cegelec cools 20 × 4358a1sr
Cegelec Co?les m73 60001
Cegelec 4 Décennie écran D'Affichage 8933
VFTV4009
VFTL4003
VFTV4002B
VFTV4016B
VFTL4002
204350/20
Cegelec GDS1010-4002
CEGELEC COOLS 95-01 KCL-3-94V-0
CEGELEC m73-60001
CEGELEC mae95-07
Cegelec m73-60001
Cegelec cools mae95-07
ATV18U18N4
ATV58PU09M2
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