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When compiled new added charts in PCS7 getting warnings
Created by: IT service at: 1/10/2018 10:45 AM (3 Replies)
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| 1/10/2018 10:45 AM | |
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Posts: 107 Rating:
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Good day everyone... I attached TXT file - that when I compiled new added charts in PCS7 I get that warnings.. Could someone explain will it affect to the program later when I will download it?? Thanks IT_Service ------------------------------------------------------------------------------------------ AttachmentSTORAGE_Compile.txt (447 Downloads) |
Last edited by: Jen_Moderator at: 1/19/2018 8:16:59 AMNew subject after splitting |
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| 1/10/2018 11:04 AM | |
Joined: 3/14/2008 Last visit: 10/31/2024 Posts: 2119 Rating:
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Hi, it means those blocks are not installed in interrupt OB's-> Range OB30-OB38. For PCS7 interrupt OB's must be used. It means basically that the CPU handles each OB within a certain time. For example, OB35 can be set to 500ms. All blocks in OB35 are handled within 500ms. I'm guessing you have those blocks in OB1. OB1 must not be used for numerous of reasons, but one is that when the CPU load increases, the interrupt OB's are still being handled within the execution time, but OB1 execution can increase. For PID logic, this can be a problem. Some blocks do not work properly when there are using in a non interrupt OB. Several blocks like a timer block, have an I/O called: SampleTime. The I/O has a system attribute were it determines in which OB the block is called and it will set the sampling time accordingly. At the end, the time is counted each second regardless of which OB it is in. When you mess with sampling time, a timer can run faster of slower. You can check the following topic for more information: |
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If I could help you, you can use the RATE button. Thank you. |
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| 4/9/2018 3:00 PM | |
Joined: 6/19/2017 Last visit: 9/6/2024 Posts: 8175 Rating:
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New question published by IT service is split to a separate thread with the subject Need to change setting of CP443-1 in properties Time-of-Day synch. tab in the SIMATIC Mode from From station to LAN to Automatic . Best regards |
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