Best way to monitor the ON time of something in a minute ?!

[Ayman_Metwally]

Greetings everybody,

I first have to thank everybody offers help to others here.

I have a question regarding the Best way to monitor the ON time of something in a minute.

Say I have an On/Off switch that I want to know how many seconds that it was ON in the last minute (say) .. and reports that to a file or database each minute. So every minute I send a report to the DataBase with the number of seconds the switch was ON in the last minute.

I already made a solution, But it's not that good I think and there is a problem there .. Please check my VI as it describes the solution more than my words here.

Any comment is appreciated.

Thanks in advance.

[GerdW]

Hello Ayman,

I attached a changed version of your vi. It uses two parallel loops. The communication is made via local variable and controled by a flag. Just have a look to get the idea.

You can do the communication also on different ways like queues...

[TimoSchott]

Hi Ayman,

here´s my trial.

regards timo

[GerdW]

Hi Timo,

could you please send an LV7.1 version as well?

[TimoSchott]

I can 😉

[TimoSchott]

and I do

[johnsold]

Here is a modification of Timo's VI which uses an Event structure, no local variables, and only one loop. (LV 7.1).

Lynn

[Ayman_Metwally]

GerdW,

Thanks a million .. This is the best for me .. Actually I was looking for something like the lower while loop in your code ..

[Ayman_Metwally]

TimoSchott ,

Thanks alot .. Very good idea .. but I think it needs some modifications to suit my needs ... The indicator holding the (ON seconds) must be initialized each interval (one minute second in our example).

Thanks again .. I appreciate it.

[Ayman_Metwally]

johnsold ,

Thanks alot toy you too .. But I think your solution also needs some modifications for the same reason in Timo's solution.

But I really appreciate your help.