DS200SDCCG4AEC+D GE

ECCP70-01 B&R
ECPA81-2 B&R
ECPNC3-1 11150168481 B&R
MCGE31-0 B&R
ECR165 B&R
4P3040.01-490 B&R
465010 B+W
AIO288/1 BACHMANN
IIMCP01 Bently
INICT01 Bently
IMCIS02 Bently

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描述

PLC通电后,CPU在系统程序的控制下先进行内部处理,包括硬件初始化、I/O模块配置检查、停电保持范围设定及其他初始化处理等工作。
PLC有很强的自诊断功能,PLC每扫描一次执行一次自诊断检查,确定PLC自身的动作是否正常,如电源检测、内部硬件是否正常、程序语法是否有错等。如检查出异常时,CPU面板的LED及异常继电器会接通,在特殊寄存器中会存入出错代码;CPU能根据错误类型和程度发出信号,甚至进行相应的出错处理,使PLC停止扫描或强制变成STOP状态。
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