6/24/2013 10:45 AM | |
Posts: 25 Rating:
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of course thank you very much i'll attach some pictures as you can see i have 2 on/off switches and 2 potentiometers i was thinking to use the switches as start stop buttons and the potentiometres : one to set the reference and one to simulate the signal receved from a flow transducer Attachmentlevel.zip (421 Downloads) |
Last edited by: bbc91 at: 6/24/2013 10:45 AM |
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6/24/2013 11:01 AM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating:
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Hello, As you mentioned in the Subject , Software is Step7 V5.5. Hence you need FB41 PID Block from Standard Library of Step7. You have to Call this Block in Cyclic interrupt OB35. Also have a look a following Threads. PID Controller PID in Step7 Hope this helps... |
VANDE MATARAM..... |
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6/24/2013 11:22 AM | |
Posts: 515 Rating:
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HI, Find an attached example. Use it as you reference. You can find the FB41 block inside the libraries-standard library-pid control blocks. assign the parameters as mentioned in the example attached. give the desired setpoint in the 'SP_INT', assign the input from your potentiometer to 'PV_PER' (if you are feeding it directly through the AI card or else if you are using the scaled value rather than directly feeding through the AI card, use 'PV_IN' instead. Assign the tuning values as required (P & I value). For more help you can click on the block and F1. First try it in manual mode and c whether you are getting the output and then go for the auto mode
AttachmentPID BLOCK.pdf (544 Downloads) |
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6/25/2013 7:46 AM | |
Joined: 1/28/2009 Last visit: 8/26/2024 Posts: 6846 Rating:
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Hello, I guess you want to implement a cascade control structure with FB41.Please read the following topic: Need help in Cascade control method... Best regards Hamid Hosseini |
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