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1/8/2015 12:53 AM | |
Joined: 4/24/2012 Last visit: 2/22/2024 Posts: 5 Rating: (0) |
Dear Expert, Currently I have a S7-400 H system (412-5H) setup. From visual, the "MAINT" LED is lit ON at CPU1 but CPU0 & CPU1 is still in Run mode with redundancy functioned. When online HWConfig, I found that "Maintenance Demanded" for IF2 on CPU1. Besides, I noticed that the CPU1 has gone into error searching mode where "RUN" & "STOP" LEDis flashing, while REDF, IFM1F & IFM2F LED lit ON. This scenario happened few times in past 2 days. From CPU diagnostic buffer, the possible root cause of this problem is SYNC module faulty. However, my casewas happened intermittently & and now the system is back to normal (both CPU error free & in redundant mode). Please advise how to confirmif the SYNC module is malfunction? Kindly refer attachment for diagnostics event. Thank you very much. AttachmentCPU Diag Event for MAINT (Yellow Text) - 07-01-2015.pdf (404 Downloads) |
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