Internet PLC Forum

General => Technical support => Topic started by: Smurf on June 07, 2005, 01:18:52 PM

Title: displaying running hours
Post by: Smurf on June 07, 2005, 01:18:52 PM

Output 1 controls a pump.
What's the easiest way to count the total running hours of the pump and store the values after a power shut down?

Thanks.

Title: Re:displaying running hours
Post by: support on June 07, 2005, 06:49:52 PM

You can mark the start time using the real time clock TIME[1], TIME[2] and TIME[3].  Then at the end of the run use the stop time to minus the start time. Of course if the process runs for more than 24 hours then you will need the date as well.

Another way is to use a timer with  SV = 600, and at the end of the time out, trigger a custom function and increment a variable by 1.  This keep track of the time the pump runs (in minutes)  and to get the hour, just divide the variable by 60.