IS215VCVGN6A GE

GFK-1104A
IP-ALTERA-RO _
ADSP-2101K6-66 7 1
P21-012AR
P41-220AR-A
PM1-5A1-XD1
RS232-C 3BSE018103R1
CI853K01 ABB
1FK7060-5AH71-1DG5 SIEMENS
JD63F400 SIEMENS

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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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