Problem with analogue output voltage

[henna]

i am working on a level control system which has an analogue input (0-10V level measurement probe) and an analogue proportional valve analogue output. I have configured the AO to be 0-10 volts in the measurement and explorer but when running the labview program it reverts to -10 to 10volts.Therefore if i set a tank to be filled to a setpoint of 3 volts it will do this but if i set the set point back to 2volts when the probe is reading 3V the Analogue output reverts to a negative output and opens the valve to fill the tank even if the setpont is reached.
Can anybody help?

[SachaE]

Hi,
I'm wondering which card you have, which version of LabVIEW, and which version of NI-DAQ you're using.
That way we can hopefully give an example of what you're trying to do. Can you please attach the example code that reproduces the problem?

Thanks
Sacha Emery
National Instruments (UK)

[henna]

Hi, thanks for your reply. The card is a PCI-6024E type the version of labview is Labview 6.Enclosed please find my labview code and front panel as an attachment.
Thanks
Micheal Hennessy