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S5-95U has been stoped

1/5/2024 12:09 PM	Rate (0)
akbar_torkashwand Bronze Member Joined: 6/14/2015 Last visit: 11/14/2024 Posts: 243 Rating: (2)	hello every body. I have S5-95U. LED stop is red and it dose not go to run mode.it has not any error. how can I find why it is in stop mode. Attachment S5.PNG (351 Downloads)

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1/5/2024 1:06 PM	Rate (1)
Gustavo Antonio B... Member Joined: 6/20/2017 Last visit: 11/18/2024 Posts: 444 Rating: (40)	Have you tried unplugging all the I/O boards yet, pulling them off the bases, unplugging all the sockets, checking the terminals, any oxidation, possibly cleaning them up and reassembling? These are pretty old CPUs and HW, with very little diagnostics. Verify. Then possibly, if it does not return to RUN check the few internal registers of the CPU. Or, and better yet, spend your time in replacing the old PLC with a new one. For another 10 or 15 years you won't think about it again.
	Last edited by: Gustavo Banchetti at: 01/05/2024 13:07:35 Last edited by: Gustavo Banchetti at: 01/05/2024 13:09:15 Last edited by: Gustavo Banchetti at: 01/05/2024 16:52:38 Gustavo Antonio Banchetti Brucatori.
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This contribution was helpful to 1 thankful Users mindware

1/6/2024 4:44 AM	Rate (0)
akbar_torkashwand Bronze Member Joined: 6/14/2015 Last visit: 11/14/2024 Posts: 243 Rating: (2)	Thanks so much. I unplugged all IO boards,but I have problem yet. when I reset CPU and download simple project it works correctly. but when I download program of machine it dose not go run mode. Where I can monitor diagnostic registers?

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1/6/2024 12:00 PM	Rate (0)
Gustavo Antonio B... Member Joined: 6/20/2017 Last visit: 11/18/2024 Posts: 444 Rating: (40)	Using the STEP5 in online mode, you can check the status of the CPU interruption registers (6 byte). I only remember the "BATPUF" bit, regarding the battery. Then you can find in the manual, capther 5, the diagnosis. I think that even the software that you are using must show these registers in some ways.
	Gustavo Antonio Banchetti Brucatori.
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