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以西门子S7-300型PLC为例,从硬件指示、软件功能、用户程序等3个方面对故障诊断方法进行了总结,以期提高PLC故障诊断的效率,增加PLC运行的可靠性。
Taking Siemens S7-300 PLC as an example, the fault diagnosis methods are summarized from hardware instruction, software function and user program, in order to improve the efficiency of PLC fault diagnosis and increase the reliability of PLC operation.