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PLC CPU 943 is getting red ST, QVZ and BASP(trip or stop) during normal run mode suddenly

9/30/2025 5:10 AM	Rate (0)
adeelsoomro Joined: 8/3/2025 Last visit: 10/18/2025 Posts: 22 Rating: (0)	Dear Sir Towome, we are facing serious issue regarding to machine stop suddenly on checking we found the LEDs of cpu are red ST, QVZ and BASP for your reference snap or file is attached we also taken interrupt stack details which i am adding in comments also, i think may be this is not good that i am asking this in 2025 because this model by siemens is ended years ago but may be little help can make it more easy thanks Attachment plc status showing red indications st, qvz and basp.jpg (15 Downloads)

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9/30/2025 5:16 AM	Rate (0)
adeelsoomro Joined: 8/3/2025 Last visit: 10/18/2025 Posts: 22 Rating: (0)	i stack picture is attached here Attachment WhatsApp Image 2025-09-30 at 09.39.42_dc166f8d.jpg (21 Downloads)

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9/30/2025 5:17 AM	Rate (0)
adeelsoomro Joined: 8/3/2025 Last visit: 10/18/2025 Posts: 22 Rating: (0)	FC101 is for your reference Attachment WhatsApp Image 2025-09-30 at 09.39.42_0fc3fb09.jpg (14 Downloads)

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9/30/2025 5:18 AM	Rate (0)
adeelsoomro Joined: 8/3/2025 Last visit: 10/18/2025 Posts: 22 Rating: (0)	control bits status Attachment WhatsApp Image 2025-09-30 at 09.39.43_5d10c7c9.jpg (18 Downloads)

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