MODBUS communication failure in Siemens PCS7 system, seeking help

2019-08-19View Original

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I am using a Siemens PCS7 system with MODBUS communication for controlling one compressor. Recently, issues such as flickering caused by rectifiers in the factory area have led to communication errors in the PCS7 system. Strangely enough, this has also affected the high and extremely high alarm settings for several hard-wired temperature sensors, causing those settings to reset to zero. I am not familiar with Siemens PCS7, so I hope experts can help analyze this situation.

Reply #22019-08-19

Without images or data, it seems quite difficult to analyze, right?

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MODBUS communication failure in Siemens PCS7 system, seeking help

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