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s5 plc istack info needed on this

9/13/2025 6:19 PM	Rate (0)
adeelsoomro Joined: 8/3/2025 Last visit: 10/18/2025 Posts: 22 Rating: (0)	Hello, by analysing via istack in running mode of plc i got these, can any one here can clear that what does it means these are last errors which got hold on its memory what should i do to get rid from plc stop error suddenly. Attachment WhatsApp Image 2025-09-13 at 23.12.15_4784c962.jpg (59 Downloads)

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9/30/2025 8:13 AM	Rate (0)
Towome Platinum Expert Joined: 7/9/2015 Last visit: 12/17/2025 Posts: 4493 Rating: (644)	Hi, The table contains various control bits labeled with abbreviations or “NB” (not assigned). Some fields are marked with an “X,” indicating active or set bits. The message No user memory exists in the lower-left corner suggests that no user-defined memory area is currently available or assigned. This may occur if the CPU is not initialized or if a project file is missing.
	If my post was useful, please rate me - if not, please tell me - thank you!
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9/30/2025 3:40 PM	Rate (0)
adeelsoomro Joined: 8/3/2025 Last visit: 10/18/2025 Posts: 22 Rating: (0)	Sir what is best we can do actually the plc is going trip or red i already mentioned in this with new i stack information too we have changed the cpu but still plc is going stop suddenly

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9/30/2025 3:43 PM	Rate (0)
adeelsoomro Joined: 8/3/2025 Last visit: 10/18/2025 Posts: 22 Rating: (0)	https://sieportal.siemens.com/en-ww/support/forum/posts/PLC-CPU-943-is-getting-red-ST-QVZ-and-BASP-trip-or-stop-during-normal-run-mode-suddenly/337309?cl=en briefly explained in this post

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