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Hi there, I am retrofitting a controller for a fuel vale test stand. I have all working with one exception.
The venting function, I am stuck in a thinking loop in my mind, I suspect that the solution is simple, and I am overthinking it.....
To explain, during the venting function test the pressure is slowly manual lowered until the valve opens for flashing venting, and the pressure drops fast to close of zero. The last higher pressure before dropping of the pressure fast needs to be shown on the display.
Does anybody have a solution as a reversed sample and hold or as a memory function.
I attached a cleaned up version, the pressure opening test is working perfect.
You're on the right track thinking about a "sample and hold" or memory function. Here’s how you can achieve this in TIA Portal:
Resources:
Consider using a timer to ensure the peak value is captured correctly before the pressure drops. Share your code snippet if you need further assistance.
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