how can I design a time controlled application

[ruedigerkramer]

I want to build a time controlled VI which can provide chemical actions e.g. to open or close valves etc. The duration of the actions, the steps are written down in a spreadsheet e.g. from 0...1 min open valve A, from 1...10 min open valve B etc. The user should have the possibility to pause the run and resume at the same point. Can someone help me to find the most effective way to solve this problem? Thanks Ruediger (I use LV 6.0 on NT4)

[BrandonS]

I have a simple example that I had been working on. I made a couple modifications based on what you described. Check this out and see if it helps.

[ruedigerkramer]

That's it! Nice trick to solve the problem of
pausing activity. I've fit it to my application.