4/5/2019 11:26 AM | |
Posts: 14 Rating: (0) |
Hi all, I am working on a PCS7 V8.0 and got an issue on the AO signal. On the related CFC the output value on the CH_DO block is changing according to the input value(U) but if I monitor the output of the card the status value is not changing. The AO card is not faulty and the configuration is correct. Any idea what might cause the issue? ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 4/5/2019 2:22:59 PMNew subject after splitting |
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4/5/2019 2:29 PM | |
Joined: 9/9/2015 Last visit: 9/15/2024 Posts: 727 Rating: (278) |
Dear Nico0908, You may try to do this 1. Go to CFC editor - > Cross Reference -> Address 2. Look for the Output address that you are having , Sort by the address 3. Check is it duplicated? If you wrote 1 into the output in the beginning, but before the cycle end, you wrote 0 again into the same output, when you check at the module, the result will still be zero. |
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4/5/2019 6:05 PM | |
Posts: 14 Rating: (0) |
Hi Jaz, Thanks for trying to hI checked and it's not duplicated. BR Nico |
4/5/2019 6:29 PM | |
Joined: 2/1/2010 Last visit: 9/19/2024 Posts: 150 Rating: (71) |
First, I assume you have a typo and it is linked to a CH_AO channel driver and not trying to do something highly unusual mixing AO signals with DO channel drivers. Have you ensured the insertion point of your CH_AO block is the the same OB as your IO card PIP? If they don't match in the right set of ways, you can especially have this problem. For example CH_AO is in OB32, your PIP in controller properties should set example OB32 = PIP2, then on your AO card, set the address to PIP2 process image. |
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4/6/2019 5:14 PM | |
Joined: 9/9/2015 Last visit: 9/15/2024 Posts: 727 Rating: (278) |
Can you attach a screenshot? I would like to see the symbol name with absolute address in your modules, the Output driver at your CFC and the absolute address in your cross reference sorting. |
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4/8/2019 10:16 AM | |
Posts: 14 Rating: (0) |
Hi Jaz, You were right, I double checked and the address was duplicated. The issues has been sorted. Many thanks. |
4/8/2019 4:29 PM | |
Joined: 9/9/2015 Last visit: 9/15/2024 Posts: 727 Rating: (278) |
Cool. Thanks for letting me know the solution is helpful here. |
Please give me 5 stars Rating if my post is helpful for you. :) |
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