12/19/2019 8:55 PM | |
Joined: 9/9/2014 Last visit: 7/11/2024 Posts: 246 Rating: (40) |
Hello! Does this happen on both PLCs or only on one? Give a little more information... Also read the topic below, download examples from there (maybe you missed something) However, remember - the PLC does not process any instructions when in STOP mode LED Status of CPU in Stop Mode I tested the status of the LEDs for the 300th PLC series, however, in the stop mode, I did not request the status of the LEDs but the status of the variable update (for reinsurance, since there were some nuances - I don’t remember now) |
Best Regards |
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12/20/2019 8:53 AM | |
Joined: 9/9/2014 Last visit: 7/11/2024 Posts: 246 Rating: (40) |
Hello, This is an interesting topic for me Check out the topics below: Reading RUN LED status with SFC51 S7 400H LED Status Display Problem Manual: System Software for S7-300/400 System and Standard Functions Volume 1 and Volume 2 FAQ: How do you read out the operating state and status of an H system? And here is what I think: Try the manual “Getting the Status of the LED Indicators” to do it all over again - if you have two physical redundant PLCs (It is practically useless to try this on a simulator, since system data is not always correctly interpreted by it) "SSL-ID W#16#xy74 – Status of the Module LEDS" - it must be work, for redundant PLC also If, according to the manual, this does not work, then: Look FAQs below: How can you visualize the current status of the CPU on a WinCC flexible operator panel? How do you evaluate the "RUN / STOP" mode of the CPU via an HMI operator panel? You can use the connection test (in fact, checking the change of a variable on the PLC itself) with your PLCs to understand whether it is in the stop or not. However, in this case, it will be a question of all PLCs at once - the STOP state will mean that both PLCs are stopped I did the same with the 300 series without redundancy - it worked fine. However, this is most likely not what you need ((( Another thing is that when the PLC is stopped, it does not do any instructions - however, the case with the redundant PLCs is different - one failed, the other must necessarily report the condition of the other. ************* If the CPU in Stop mode How shall i get the other information such as Battery Fault, External Fault, Bus1f Fault, IFM1F etc. (is it possible in stop mode?) It must be work with SFC51... ************* Therefore, I look forward to hearing from you (if you test it again). I try to Help, but i can't test it on real PLCs))) |
Last edited by: Unreality at: 12/20/2019 08:55:30Last edited by: Unreality at: 12/20/2019 10:53:14Last edited by: Jen_Moderator at: 12/20/2019 11:24:46Optimized links. Best Regards |
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