Run Hours

[georgestefan]

Hi, I am using a binary point for a compressor, and I want to know if is any possibility to extract this data and to trigger an alarm after 1000h of running:

[Jared Wiltshire]

@georgestefan you can add an event detector to detect if it stays in the same state for x hours but that wont work if the compressor turns off and on obviously. I'm sure there is a way to do what you are asking via scripting. @phildunlap should be able to help you.

[phildunlap]

Hi George,

There is! Runtime information is available in the StartsAndRuntimes object returned from the past() and previous() functions on data points in scripts.

So, i could have a meta point like,

var stats = p.past(DAY); //p is the variable name of the binary point in the context
for(var k = 0; k < stats.data.length; k+=1) {
    if(stats.data[k].value === true)
        return my.value + stats.data[k].runtime/3600000; //runtime given in milliseconds
}
return my.value;

running on a cron like 59 59 23 * * ? and it'll totalize once a day the hours run that day. Then you can put a limit detector on the meta point.

[georgestefan]

Thanks, I'll try this.

[georgestefan]

@phildunlap I've created a meta point like this and when I run the script it shows me the right value, but the limit detector didn't worked

This is the meta point:

And I've noticed this in my data base:

Comp_Run_H it's the meta point from above.
Can you tel me why I don't have any value returned?

[phildunlap]

This post is deleted!

[phildunlap]

Have you let this run over night? With that cron pattern it should only run on the last second of the day to produce a value.

[georgestefan]

Yes, that's right, at the last second of the day produce that value, I'm starting to see how this is working.
Thanks again!