12/27/2016 8:54 AM | |
Posts: 39 Rating: (1) |
Dear all, I found a external fault on the backup PLC while the primary PLC status is Ok. Attached is the diagnostics buffer and screenshot of the hardware online view. Please help me rectify the error. Thanks a lot. Wish you a happy new year. Best regards, Eddie AttachmentDiagnostics.zip (150 Downloads) |
12/29/2016 10:18 AM | |
Joined: 11/29/2011 Last visit: 9/24/2024 Posts: 1359 Rating: (232) |
Hi, See the S7-400H EXTF LED in one PLC is always ON! topic for clue. What I try to suggest here is that EXTF led may lit because of something do not currently make entry in the diag buffer. To avoid that make sure the diagnostic functions enabled where it is applicable so there is more data we can go on with. So for now:
I hope I could help! |
Last edited by: MicroMan at: 12/29/2016 10:18:59 AMLast edited by: MicroMan at: 12/29/2016 8:47:41 PM- What you read here, please check with manuals and your requirements. |
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1/4/2017 10:23 AM | |
Posts: 39 Rating: (1) |
Hi MicroMan, Thank you so much. The EXTF is due to the PS battery fault. I also found the battery fault message in the diag buffer. Regards, Eddie
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