11/9/2020 3:02 PM | |
Joined: 9/27/2006 Last visit: 9/24/2024 Posts: 12282 Rating: (2685) |
Hello Ivan; Hard to say anything about your problem without knowing a bit more of your project. You say that after repositioning your TC input module in the rack the SF blinking frequency changed. Which SF L:ED, on the module, on the CPU? In any case, you are saying that you already had a blinking SF (System Fault) indication before you attempted to re-seat the TC module, right? It would be helpful to tell us what types of TC are connected to the module, and if they respect the wiring diagrams form the S7-300 Module Data manual: https://support.industry.siemens.com/cs/ww/en/view/8859629/99695529099 Whenever a diagnostic LED is active, a message is logged by the CPU in the diagnostic buffer, with possible information on the source of the problem. Can you access the diagnostic buffer (with Step 7 software)? If you can, please use the Save As button in the diagnostic buffer page to create a diagnose.txt file that contains the messages of the buffer. Please attach the file here so we can examine it with you and try to find a cause for the fault. Hope this helps, Daniel Chartier |
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