[Step7] Function block doesn't pass value of output variable
Created by: Poljak at: 10/14/2019 12:21 PM (9 Replies)
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| 10/14/2019 12:21 PM | |
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Posts: 36 Rating:
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Hi, when i monitor FB inside its show's that variable "#Reset_pompy" is in True state, but when i monitor outside FB it said its False. What's going on ? |
| 10/14/2019 12:23 PM | |
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Posts: 36 Rating:
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Here u can check what shows up inside FB |
| 10/14/2019 12:36 PM | |
Joined: 7/24/2014 Last visit: 8/1/2025 Posts: 393 Rating:
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Hi jakub.polok Are there many instances called for this FB, if so then what happens is whenever you select option as right click to block and "open and Monitor" it will show you the monitor results of 1st called instance of that FB So the solution is to use monitor with call up path that can be achieved by the following link Monitor with Call up path simple Wayand let us know if it serve the purpose. |
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Thanks and Regards |
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| 10/14/2019 12:38 PM | |
Joined: 1/28/2009 Last visit: 1/5/2026 Posts: 6892 Rating:
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Hello,
Your FB may be called several times.The following procedure will help you to monitor an specific block for a determined instance. The other point to add, all data related to each instance is saved in instance DB and data saved there is valid for that application. How do you monitor a block with the desired call environment in STEP 7?I hope it helps, hdhosseini |
Last edited by: hdhosseini at: 10/14/2019 12:55:41Last edited by: hdhosseini at: 10/14/2019 13:16:07 |
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| 10/14/2019 1:01 PM | |
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Posts: 36 Rating:
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I called this function block only once to check if its work properly. The problem is that it should show True on output becouse the conditions are met.. |
| 10/14/2019 1:06 PM | |
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Posts: 36 Rating:
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Look, here is the problem. I made another FB in ladder to show it up. Inside block its True, but it doesnt pass value to the output... |
| 10/14/2019 1:13 PM | |
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Posts: 36 Rating:
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OK, i found out problem. There was some issues with datablock. Now it's working. Thanks for answers |
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