TB557-316B10JB ABB

ABB TB557-316B10JB
ABB TB567-31308T20
ABB ACS800-04-0400-3+P901
ABB 266HSHMKBB1EZL1TB
ABB DSQC374
ABB 3HAC3462-1

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Description

并能诊断用户程序中的语法错误。当可编程逻辑控制器投入运行时,首先它以扫描的方式接收现场各输入装置的状态和数据,并分别存入I/O映象区,然后从用户程序存储器中逐条读取用户程序,经过命令解释后按指令的规定执行逻辑或算数运算的结果送入I/O映象区或数据寄存器内。等所有的用户程序执行完毕之后,


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