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SM1231 starts flashing in red color

Created by: AutoGen_2336375 at: 5/18/2023 7:27 AM (3 Replies)

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5/18/2023 7:27 AM	Rate (0)
AutoGen_2336375 Joined: 10/30/2022 Last visit: 11/7/2023 Posts: 1 Rating: (0)	Hi, I am using S7-1200 and analog input SM1231. Suddenly SM1231 starts flashing in red color. It was working fine before. Please provide me with solution ------------------------------------------------------------------------------------------ Split from Supply voltage missing error on analog module. Attachment WhatsApp Image 2023-05-16 at 11.59.03 AM.jpeg (407 Downloads)
	Last edited by: Jen_Moderator at: 05/22/2023 09:01:50 New subject after splitting
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5/18/2023 3:26 PM	Rate (0)
Hati Platinum Member Joined: 9/21/2012 Last visit: 1/16/2025 Posts: 4252 Rating: (479)	AutoGen_2336375 Hi, I am using S7-1200 and analog input SM1231. Suddenly SM1231 starts flashing in red color. It was working fine before. Please provide me with solution Read the diagnostics buffer with TIA.

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5/29/2023 8:12 AM	Rate (0)
Raijin Joined: 2/6/2023 Last visit: 1/14/2025 Posts: 128 Rating: (15)	Hello!, In case you cannot access the diagnostic buffer as indicated by other users, I recommend you look in the manual, there is usually a section that indicates what exactly the color code of the LEDs means.

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5/30/2023 6:27 AM	Rate (0)
Mr.V Silver Member Joined: 6/19/2019 Last visit: 1/9/2025 Posts: 706 Rating: (77)	I don't like your module power light is red on, check power to this module maybe it's maintened with fuse and it's broken? have you try to turn off power and power again to this module? it's still in red? it might be your module totaly demaged.

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