error handling?

[bartb]

Hi

I`m rewriting 2 big VIs that are used to test a device. Such a VI handles several tests, selected by a state machine. I like to start a discussion  about whats the best way to handle errors in a big state machine VI

for example:

when a communication fails, you have the option to retry, or stop the test sequence (maybe even retry)

is there some documentation on how to handle errors in big applications?

cheers,

B

[ThSa]

One possible way is to use a FGV (functional global variable) to handle errors. You can implement 4 states within the while loop for instance: Initialize, Set, Get (Report) and Clear Error. If an error occurs, a user event is generated which displays an unobtrusive message/sign on display. Furthermore, you can group logical errors and handle several procedures for every group.

One source how to handle errors is the Intermediate I course and another source could be the LabVIEW bookshelf.

Regards,

ThSa