7/10/2020 2:53 PM | |
Joined: 9/27/2006 Last visit: 10/8/2024 Posts: 12285 Rating: (2685)
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Hello David-Holczi; There are many threads on this forum discussing alarm LEDs and their meaning. BF refers to a bus fault, an error communicating with a distributed I/O station on a network (Profibus or Profinet). SF iindicates a System Fault, generally accessing a non-existing address is your program. In combination with a BF LED, it probably means that your program is exchanging data with a lost distributed I/O station while it is not available. The diagnostic buffer is the best tool to locate the faults, but in the format you show it is difficult to get all the information it contains. You could use the Help on Event button to receive more information on each individual fault, but it requires you to open up each message in the buffer window. The other option is to use the Save AS.. button; this generates a text file that contains all the messages of the buffer, with all the accompanying information on each message. You can attach this text file to your next post, which will allow us to have a look at your complete buffer and help you analyze it. One this noticeable in your present buffer: the timestamps of the fault messages are very close to each other, on the order of milliseconds.It looks like you are losing and recovering I/O stations as a group, which could mean a termination error (an end station termination not being active or powered). You could add this to your investigations while you are preparing to send us the diagnostic buffer messages. To help you in your examination of the network, I have found this article very helpful as a checklist: TOP 5 REASONS YOUR PROFIBUS NETWORK FAILED https://us.profinet.com/top-5-reasons-your-profibus-network-failed/ Hope this helps, Daniel Chartier |
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