abort time delay

[ajcooke]

Hello,

I have encountered an issue I was hoping I could recieve some input on. In my VI that I am creating, we have a series of valve opening and closing followed by time delays to allow for a reaction to occur. However, in terms of saftey while these reactions are going on there is a risk of pressure build up. I want to be able to abort the time delay early when the high pressure alarm is triggered. From here the program would ideally enter a "shutdown" mode to diffuse the pressure build up. Someone had propsed the solution of elapsed time delays with many small ones but I would like to avoid that if possible.

Thanks

[Dennis_Knutson]

Duplicate - http://forums.ni.com/t5/LabVIEW/Abort-Time-Delay/td-p/3148089

[ajcooke]

I added in an extra tad of information here

[Dennis_Knutson]

You still should have stuck with your original thread. You also need to explain why you don't want to use the elapsed time function or smaller waits. Neither the Time Delay or Wait (ms) can be aborted.

[ajcooke]

That was my question. I was unsure whether they could be aborted or not.

[apok]

there are many ways to do this...without your vi it is a guess on what would help you. also, i like to use notifiers.as Dennis has said,"Neither the Time Delay or Wait (ms) can be aborted". here's an example of a simple state machine:

[amazed]

Thinking if it is a safety issue - would advise against a software solution.  Hardwire relays in failsafe mode.(to the n.o. contacts)