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et200s AI wire break detection

Created by: Oscar_83PL at: 10/26/2010 10:31 AM (5 Replies)

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10/26/2010 10:31 AM	Rate (0)
Oscar_83PL Bronze Member Joined: 10/22/2008 Last visit: 11/12/2023 Posts: 362 Rating: (5)	Hi, I use S7315-2PN/DP and ET200S AI module (6ES7 134-4GB01-0AB0). I never used diagnostic functions before and have now some question about it. I would like to have wire break information for Analog channel. I checked "Diagnostics:wire break" in "Parameters" of the AI module. But I am not sure what shell i do with it. Where can i get that information about wire break. I found that diagnostic code for this error is 6(D) but how to load diagnostic buffor? best regards

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10/26/2010 1:48 PM	Rate (0)
Hulzhex Gold Member Joined: 8/25/2005 Last visit: 11/30/2023 Posts: 1161 Rating: (110)	Hello Oscar_83PL, Within your PLC you will get an alarm (OB82) if there will be a wirebreak. With this alarm you will get all the information that are available about it (moduladress, ...) Looking at your STEP 7 poject online you will get information about it too. Is this answering your question? Best regards Sabine

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10/26/2010 3:37 PM	Rate (0)
Oscar_83PL Bronze Member Joined: 10/22/2008 Last visit: 11/12/2023 Posts: 362 Rating: (5)	1.Logical base address of the module where the fault occurred: OB82_MDL_ADDR So if there is a fault in module (HW diagnostic address 2041) the OB82_MDL_ADDR gives me that adress? 2. OB82_FLT_ID gives the type of fault? Do i have to reset somehow this faults? What if one after another alarm rise up? what that OB82 will do then?

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10/26/2010 3:38 PM	Rate (0)
Oscar_83PL Bronze Member Joined: 10/22/2008 Last visit: 11/12/2023 Posts: 362 Rating: (5)	Do i have to use SFC 39 - 42 for any reason?

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12/9/2015 1:13 PM	Rate (0)
Willybong Silver Member Joined: 2/11/2015 Last visit: 3/2/2023 Posts: 425 Rating: (32)	I read about it and I am trying to catch the wire-break fault also. I think that you should use SFC51.

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12/12/2015 12:04 AM	Rate (0)
Rescobedo Silver Member Joined: 11/5/2012 Last visit: 10/24/2023 Posts: 486 Rating: (63)	Hello Oscar. When a wire break occurs with an AI you can check the value of the PIW where the input is conected. The values shown, normally are from 0 to 27648. If a wirebreak occurs you will see a Value of, if i rememeber well, 32767 or -32767. So you will easily know when the wire break occurs. I hope this comment helps. Regards.

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