SPNPM22 ABB

3HAB3713-14 Inner ring ABB
3HAB3725-12.3HAB3725-12 ABB !
3HAB3726-11 Ax.cage with rollers ABB
3HAB3731-12.3HAB3731-12 ABB
3HAB3741-1 Cushion ABB
3HAB3754-1 Sync.market ax.2 ABB
3HAB3757-17 Needle roller bearing ABB
3HAB3771-1 Gasket ABB
3HAB3772-1203HAB3772-120 ABB

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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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