129740-002 ABB

WORDWood easyGen 3200
PLX31-EIP-MBS abbdcs
IC695CPU315
IC9445B200AB abbdcs550
1747-L552
FMH2A03TR-EN43CZ DCS
PM510V08 DCS
A2H124-24FX
BAUMER 9906356 GBMMW.Z07 PLC
VME-48108-00F-G PLCDCS

分类:

描述

CPU是PLC的核心,起神经中枢的作用,每套PLC至少有一个CPU,它按PLC的系统程序赋予的功能接收并存贮用户程序和数据,用扫描的方式采集由现场输入装置送来的状态或数据,并存入规定的寄存器中,同时,诊断电源和PLC内部电路的工作状态和编程过程中的语法错误等。进入运行后,从用户程序存贮器中逐条读取指令,经分析后再按指令规定的任务产生相应的控制信号,去指挥有关的控制电路。

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