problems with event source using event structure

[larson09]

Hello!

I'm using an event structure block. It works correctly when the event source is a control and the event is change value. But i want to use an indicator like event structure or a variable (like a matrix or a vector). I want that when the value changes, an event occurs, but it doen't work, I dont' know why?. What i have to do to work with indicators or variables in a event structure block?

Thank you in advance

Larson

[TimoS]

Hi Larson,

regarding your question i want refere you the following KB:

http://digital.ni.com/public.nsf/websearch/024828947672E68586256ADB0071FB1B?OpenDocument

that´s a way how you can detect changes on indicators

DO NOT USE THIS IN A LOOP!!

an other way is to compare the actual value with the "old" value (e.g. using shift register) and put a case structure behind the comparisson

regards timo

[larson09]

Hello Timo again,

in reference to your answer "an other way is to compare the actual value with the "old" value (e.g. using shift register) and put a case structure behind the comparisson"...can you send me a little example, i don't know how  can compare the new and the old vaue of a variable and to obtain true or false for using in a case structure block....

I've read the article of the web you've sent me and i think the better way to do it is compare the value.

Regards.

Larson

[TimoS]

of course!


regards timo

[larson09]

Ooohhh!!

It's perfect!! Thank you very much Timo!

REgards!

Larson