Programming Omron PID Controller Connected via RS485 to USB

[young_sparkster]

I am trying to create a VI that will control an analogue OMRON PID controller. So far, I have found some information suggesting I will need to program it using Modbus or CompoWay/F. I am not familiar with either of these and I am very new to labview! Any and all help is appreciated!

Further detail: 

I have a perfectly functioning PID controller with RS-485 capabilities. I have converted this to USB. Now I need to write a labview VI that will allow me to tell the physical controller what the set point should be, and allow for this signal to change after a certain period of time (so that it now effectively has ramp/soak capabilities) 

Thanks!

[brettski]

You might want to start with this whitepaper: Introduction to Modbus using LabVIEW

I didn't see much info on CompoWay/F and LabVIEW from a quick google search so finding specifics on that may be tricky. Hopefully you can get by with just Modbus.

Since you are new to LabVIEW, here are a few more helpful links:

Finding Examples in LabVIEW (SUPER HELPFUL!!!)

MODBUS Library for LabVIEW (download)

Introduction to LabVIEW (landing page for all the LabVIEW basics [at least look at 1, 2, and 3])