5/7/2018 5:36 PM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2685)
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Translation from the Spanish text:
Hola Farriagada; Para asegurarte de obtener las mejores respuestas, debes asegurarte de que los participantes en el foro entiendan bien tu pregunta. Como los miembros vienen de muchos países, se eligió el inglés como un idioma de intercambio para todas las preguntas y respuestas en el foro de te Siemens. Por favor escribanos en inglés en tu próxima visita. Hello Farriagada; To make sure you get the best answers, you need to ensure that the participants in the forum understand your question well. Since members come from many countries, English has been chosen as an interchange language for all questions and answers on the Siemens forum. Please write to us in English on your next visit. Now, whenever you see a "Watchdog" entry in the diagnostic buffer, it refers to a section of code (FB or FC) that runs longer than the time allowed by the watchdog timer settings. Either the code has entered an infinite loop, or the nesting depth of the blocks has been exceeded, and the function does not return control of the program to OB1 in the allotted time. The screenshot below gieves a brief explanation of the watchdog timer of the S7-300/400 CPUs, and is taken from this document: https://support.industry.siemens.com/cs/ww/en/view/45531107 The diagnostic message you show does not give enough information to locate the specific event that caused the watchdog error. Please read the preceding and following message numbers (say messages 50 to 55), see if they point to a specific block and examine this block. Also, message number 52 of 120 is very far away from the start of the diagnostic message buffer (message 1 of 120). Many events have been logged since that message has appeared, so the error might have happened many times, or something totally different could cause a STOP of the CPU. I recommend you use the button "Save AS" on the diagnostic buffer page to send all the messages to a text file, that you can then attach here for us to examine. Maybe we can help you figure this out. Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 5/7/2018 5:48:50 PM |
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This contribution was helpful to2 thankful Users |
5/7/2018 7:24 PM | |
Posts: 2 Rating: (0) |
Hello, I attach all the diagnostic buffer. From event 51 to 1 the plc is reloaded with the program AttachmentDiagnostico 04-05-18.txt (247 Downloads) |
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