12/27/2023 3:54 PM | |
Joined: 12/27/2023 Last visit: 12/27/2023 Posts: 2 Rating: (0) |
Good Day. We have a SIMATIC S7-300. CPU319-3 PN/DP PLC in use. Recently the sistem just stop working without any messages. The only action we know is to turn on and off the power to the PLC to reset it. If there is a way to diagnose or troubleshoot for something like this? ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 12/28/2023 08:13:18New subject after splitting |
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12/27/2023 9:50 PM | |
Joined: 9/27/2006 Last visit: 10/13/2024 Posts: 12287 Rating: (2685)
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Hello JEPereira; Every S7 CPU features a diagnostic buffer, that collects information on events that are important to the PLC. That includes faults, errors and troubleshooting information. The following videos show you how to access the CPU's diagostic buffer, through Simatic Manager (Step 7 v5.x) and in Step 7 TIA Portal (Step7 v1x): you forgot to mention which of these programming environments you are using..
https://www.youtube.com/watch?v=0YozPAMls-c
https://www.youtube.com/watch?v=NVJXQrg72zo Once you have access to your diagnostic buffer, you should look for messages that mention "STOP caused by...".These would give you a basic idea of your potential problems. If you are not familiar with the diagnostic buffer, I suggest you use the "SAVE AS" button you find in the diagnostic buffer screen to create a .txt file logging the contents of the buffer. This way, you can either post the txt file here on the forum as an attachment so we can study it, and possibly provide guidance. Another option would be to send all the information you have on your situation directly to Siemens techs through a Support Request. To do so, open the Support link you find at the top right of this page, and click on the Create a Support Request selector. The page that will open contains a series of dialog boxes where you can describe your CPU/eqyipment and your problem, attach your files and have them examined by a Siemens technical employee. It may take a few days for a reply but it can be very enlightening.. Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 12/27/2023 21:54:47Last edited by: The Helping Hand at: 12/28/2023 13:58:51First Video embedded. |
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