8/17/2022 12:42 AM | |
Joined: 11/12/2021 Last visit: 3/1/2024 Posts: 1 Rating:
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Dear all, Yesterday my PLC entered the same state, I tried to turn it off and on but it didn't work. These days I will try to change the CPU slot or try it on some other rack to check if it works again. I will also check the condition of the cabinet ground and voltages. Is there any other recommendation on this? Thank you very much ------------------------------------------------------------------------------------------ AttachmentS7-400-FAIL.avi (505 Downloads) |
Last edited by: Jen_Moderator at: 08/17/2022 13:41:06New subject after splitting |
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8/18/2022 4:22 PM | |
Joined: 5/30/2022 Last visit: 9/6/2024 Posts: 571 Rating:
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Hi AutoGen_8622241, The best thing to do is to perform a factory reset, then do a firmware update like s7-mencey says I also recommend that you review the following information provided by the S7-400 LEDS: https://support.industry.siemens.com/cs/ww/en/view/109803990/147935244555 |
Last edited by: Hazard_7 at: 08/18/2022 16:25:16If this information really helps, you could use the Rate function. |
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8/19/2022 8:15 AM | |
Joined: 9/3/2008 Last visit: 9/2/2024 Posts: 927 Rating:
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Hi The description of the CPU LED is in the S7-400 manual here: https://support.industry.siemens.com/cs/ww/en/view/82478488/34700969611 Hope this helps. |
Michael |
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9/7/2022 8:44 AM | |
Joined: 5/25/2015 Last visit: 4/11/2023 Posts: 8 Rating:
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CHECK POWER SUPPLY.. DO MEMORY RESET. |
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