1C31179G02 1C31179G02

发布时间:2017-11-02

1C31179G02

1C31179G02

1C31179G02

流程控制指令,用以控制程序运行流程。PLC的用户程序一般是从零地址的指令开始执行,按顺序推进。但遇到流程控制指令也可作相应改变。流程控制指令也较多,运用得好,可使程序简练,并便于调试与阅读。 

   状态监控指令,用以监视及记录PLC及其控制系统的工作状态,对提高PLC控制系统的工作可靠性大有帮助。 

   当然,并不是所有的PLC都有上述那么多类的指令,也不是有的PLC仅有上述几类指令。以上只是指出几个例子,说明要从哪几个方面了解PLC指令,从中也可大致看出指令的及功能将怎样影响PLC的性能。 

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SINUDYN SIEB & MEYER 26.44.0007.4 BRUSHLESS MOTOR SYSTE


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SPIRAX SARCO 66952 MECH REBUILD KIT FOR PPC/PPF NEW


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TOKO INC. NCB203-2 BOARD NCB2032 SER NO 75906010
 

TYLAN FC-280 AV MASS FLOW CONTROLLER 5 SLPM CH4 FC-280A
 

DEUBLIN 9400
 

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DAYTRONIC 10BDR64 H/W 2.21.1 HISTORY PC BOARD
 

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