4/2/2024 10:48 PM | |
Joined: 1/14/2022 Last visit: 7/17/2024 Posts: 5 Rating:
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Dear Einstein, Greetings. We have PLC S7-1200, AC/DC/RLY that is normally operating. Suddenly, this PLC leds ( maint, Stop, Run) are flashing continuously and when connect Ethernet cable between PLC and PC, there was no connection also leds ( TX/RX) are completely OFF always. I shared in attachments, video for PLC leds status. Please support me to solve this problem. Thank you Taha Mohammed
------------------------------------------------------------------------------------------ AttachmentVID-20240314-WA0026.mov (169 Downloads) |
Last edited by: Alruba at: 04/02/2024 22:49:28Last edited by: Jen_Moderator at: 04/03/2024 08:32:17New subject after splitting |
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4/3/2024 11:40 AM | |
Joined: 8/12/2021 Last visit: 9/11/2024 Posts: 323 Rating:
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Hi! I would try to check the wiring to make sure everything is correct, as mentioned in the manual. Is the S7-1200 firmware updated? Try disconnecting the modules and using only the S7-1200 |
Last edited by: Jen_Moderator at: 04/04/2024 07:38:35Text formatting optimized. If this Information really helps, you could use the Rate function |
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4/3/2024 9:07 PM | |
Joined: 7/7/2010 Last visit: 9/12/2024 Posts: 15177 Rating:
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How long was the S7-1200 operating normally before it failed? If you remove PLC power, wait 30 minutes, and reapply power, does it try to power up, or does it almost immediately go into the same "maintenance" mode of all flashing? What's the firmware revision? (or what is the FW configured in the loaded project)?
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science guy |
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4/3/2024 9:40 PM | |
Joined: 1/14/2022 Last visit: 7/17/2024 Posts: 5 Rating:
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It was operating normally for 3 years before it failed. I tried to remove power for more than 30 min. and reapply power and I got same status as video that I attached previously ( No change). I can't connect to this PLC, when I connect Ethernet cable between PLC and PC, the leds TX and RX of PLC are always off and at PC, there is no plugged cable status. For loaded project more information, please refer to attached project file in this link. https://drive.google.com/file/d/1s8PU7xQwntvNDoe5kDmwfDPlRZz1oCQX/view?usp=drivesdk Best regards Taha Mohammed
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