3BHB006208R0001 UNS0883A-P ABB

6ES7414-4HM14-0AB0
MV156-MNET
GEMMH.R208P23/11030423
1756-CN2
MDLLQ130
IC695CPE305C
6ES5516-3UA11
6ES5945-7UA23
6ES5095-8MC03
1C31203G01

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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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