I need to create a vi for a pressure pump control

[laser 433]

I need to create a vi for a pressure pump control using a Analog input from FP-AI-110
Would like to have a variable setpoint and output to a FP-RLY-420 to switch the pump on and off
am using Win 2000 with fp-2010 communication module

[steven@ni]

I would suggest taking a look at some of the example programs that we have on the developer exchange.

If you are using LabVIEW, you would just need to create a simple program:

FP Open -> FP Tag Create (one for each tag) -> while loop -> (inside while loop) - read set point, do pid calculations (or process control calculations), then use an fp write to output a signal to the fp rly -> end while loop -> FP Close.

Be sure to put a small delay in your loop to allow the processor a little time to "breathe".

Hopefully, this will give you a general idea. For more information, take a look at some of the examples in dev exchange and some of the knowledge bases.

Let us know if you have any other specific questions.