wincc不经过PLC直监控诊断交换机的状态信息，请问这要怎么做呢？
最佳答案
WinCC 没有找到相关信息，借助于PLC实现，仅限于西门子产品。
How do you read out the status of an MRP ring in the user program of the CPU in STEP 7 V5.x?
https://support.industry.siemens.com/cs/us/en/view/109483256
In the user program of an S7-300 or S7-400 CPU with integrated PN interface, how can you read out the current topology of the PROFINET IO system connected?
https://support.industry.siemens.com/cs/ww/de/view/38566021/en
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谢谢
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