I would like to tare (rezero) the input signal from a forceplate (glorified

I would like to tare (rezero) the input signal from a forceplate (glorified scale) so that the base signal is set to zero, e.g.: a button on the front panel that resets the signal to zero prior to getting a measurement from a subject.
We calibrate the force plate through labview and input our new equation into our scaling and mapping box which sets the signal to zero (or near zero) and the change in newtons (force reading) is accurate but when the application is closed and reopened the signal does not always start at zero (-400 to +1200 N), while the change in newtons is still accurate. I am NO engineer, I have Forest Gumped my way into getting some nice working VIs but I can't seem to find this function.
Thank you very much for your time.

Maybe that is the limitation of Acquire Input Data.vi.The vi can't identify the Unformal key.
You can try to use Event structure and set to listen "key down" event.
There are two terminals VKey, ScanCode will sent out the information when you press key.
There are two pictures in attached file, 2.jpg will show you the detail.
Good luck.
Attachments:
SpecialKey.zip ‏17 KB

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