9/24/2019 6:40 AM | |
Posts: 3 Rating: (0) |
Dear Sir,
I also have the same issue I have downloaded the FC and OB also. The FC logic is working very fine with out any error. But still I have SF on CPU, and still saying it as "FC NOT LOADED" in diagnostic buffer, with event ID 16#253C. ------------------------------------------------------------------------------------------ |
Last edited by: CS Moderator at: 09/24/2019 13:49:36New subject after splitting |
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9/24/2019 2:15 PM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2685)
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Hello Aditya; The SF is lit and the CPU is still running: the original programmer has introduced an OB 121 in your program, so when a programming fault occurs and OB 121 is present the CPU can still keep running. That is the definition of a diagnostic OB. Which organization blocks do you have to load into the CPU to ensure that the CPU does not go into the 'STOP' status when a remote I/O fails? https://support.industry.siemens.com/cs/us/en/view/19350076 The message contained in the diagnostic buffer implies that one of your program blocks is being called, but can not be located in the program. The number of the called function should be part of the message. Open the Reference Data of your CPU, look at the program structure and try to identify the block that calls this missing function. Then remove (or comment out) that function call. Save, compile and download. Hope this helps, Daniel Chartier |
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