statechart module vectoring to another state based on error within a state

[id]

Looking for a means to handle a typical labview error occurring in a state with the statechart module and then initiating a transition to another state to handle the error.  For instance if I have a state 1 which contains an action tab that has a Labview VI called in it.  If the Labview VI returns an error, I want to send an internal trigger to vector out of the current state and into antoher one called the errors handling state.   The ability to monitor the statedata error value and send an internal trigger within the same action tab does not appear to be possible because the "outputs" terminal can't be selected as both teh internal queue and statedata at teh same time.

Anybody know how to do this?  All examples in the tutorial, etc dont handle the errors...

[df86]

I'm not very clear as to what it is that you would like to perfrom in case of an error. But attached there is a simple VI that will show you how you could handle and error in a state machine. Obviously this is a very simple VI showing you how to trap and error. what you do with the error is up to you.

If you need addtional help, handling your error please be a little bit more clear. An attached VI always helps a lot in transfering your message across to us.

Hope this helps.

[id]

Thanks but the issue that I need help with has to do with the Labview Statechart Add on toolkit and its nuances for detecting an error in one state and then handling it in another.

[Poolean]

It's possible to expand the 'Outputs' tab to include multiple parameters. Just click and drag on the edge of the tab.

Mike Pool

[id]

Mike, you would have to put in a guard transition to look at the statedata error cluster value in each state to do this.  Is there a way that an error can propagate up if it is inside of a substate or a region to the parent state?

[Poolean]

There's an example that ships with the Statechart Module titled "Error Handling Project" that does just that. I recommend using it as a guide.

Mike