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AMIC110: FCS error, what causes the FCS error

Part Number: AMIC110

Dear Experts,

My customer is using AMIC110 for Modbus/TCP and EIP. During their test, the log shows that many FCS error occur. This error occurs at 10M mode and 100M mode is good. What is the root cause of this FCS error? What should they investigate it? Does PRU-ICSS firmware output FCS error?

I understand this is not enough information. Please let us know what we should do first.

Regards,

Uchikoshi