6/25/2018 12:48 PM | |
Joined: 3/5/2014 Last visit: 8/5/2022 Posts: 5521 Rating: (1054)
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no, you won´t. but you can check for it with the information in the OB82 header. You can use the GET_DIAG-function to get specific information. You will find infos about GET_DIAG in the TIA-help or in the S7-1200manual. hope this helps, regards, |
FCK WAR! |
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6/25/2018 1:26 PM | |
Posts: 1283 Rating: (105) |
Thanks mopS04 for the inputs, if we can't detect individual channel wirebreak, then it is not quite useful. Is it the limitation with the Hardware or software? jay
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6/25/2018 2:52 PM | |
Joined: 7/7/2010 Last visit: 9/23/2024 Posts: 15217 Rating: (2417)
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The documentation for the TC module tells you the valid values and the wire-break values. You can do a simple limit check for the wire-break values since they are WAY out of range for what any TC can read.
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science guy |
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6/26/2018 5:55 AM | |
Posts: 1283 Rating: (105) |
Hi Huggy, I am aware of that limit check. what i had seen sometimes is that it is not going to that high values, but giving some values within the range which is not the wirebreak value. So I just think that limit check maybe not helpful at times. That is why I am emphasizing on OB82 solution. But It also seems hard for me to understand how to pick up two or more channel wirerbreak. Also If someone can share a sample program to read more than two errors will be great. Not the multi error concept in OB82, it just gives a general error term. Thanks, jay
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6/27/2018 1:17 AM | |
Joined: 7/7/2010 Last visit: 9/23/2024 Posts: 15217 Rating: (2417)
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Try this example project by Siemens as a guide for your own: https://support.industry.siemens.com/cs/document/109480387
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science guy |
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6/28/2018 3:58 AM | |
Posts: 1283 Rating: (105) |
hi huggy, This RALRM Instruction is supposed to be used inside OB82 right? If it's the case, how can it detect two channels when OB82 can only do only one. Maybe my bad, is there any channel specific instructions available in S7-1200. I am just using an add on module with 4XTC AI module. Not and IO device extension. Whether it makes any difference? Thanks, Jay
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6/28/2018 9:28 PM | |
Joined: 7/7/2010 Last visit: 9/23/2024 Posts: 15217 Rating: (2417)
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Did you even download and open the linked example to see how it works?
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science guy |
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7/18/2018 10:31 AM | |
Posts: 1283 Rating: (105) |
Update from SIEMENS Support for the above mentioned issue: 1. The conclusion is that it is not possible for this mentioned module S7-1200 TC in Central rack for this kinda individual diagnostics. Hope this information helps someone and thanks again for all the guys who responded to this thread. Jay |
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11/5/2019 12:44 PM | |
Joined: 12/2/2015 Last visit: 6/30/2024 Posts: 64 Rating: (7) |
Hello, Have you read this FAQ: |
Last edited by: Jen_Moderator at: 11/06/2019 09:59:21Optimized link. |
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11/14/2019 5:23 AM | |
Posts: 1283 Rating: (105) |
Yes I did. My point was about Individual channel diagnostics. |
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