Host Engineering Forum

General Category => Do-more CPUs and Do-more Designer Software => Topic started by: PLCwannabe on February 28, 2023, 05:42:32 PM

Title: Should Reset Range override off-delay timer?
Post by: PLCwannabe on February 28, 2023, 05:42:32 PM

 I have a program where the first rung in Main is an e-stop button input that resets the full range of relay outputs (Y0-Y31). I noticed today that this rung is not resetting a relay output that is being held in by an off-delay timer. Is this normal?

Title: Re: Should Reset Range override off-delay timer?
Post by: BobO on February 28, 2023, 06:03:12 PM

Quote from: PLCwannabe on February 28, 2023, 05:42:32 PM

I have a program where the first rung in Main is an e-stop button input that resets the full range of relay outputs (Y0-Y31). I noticed today that this rung is not resetting a relay output that is being held in by an off-delay timer. Is this normal?

Last one wins. Stick your estop in the bottom of scan task.

Title: Re: Should Reset Range override off-delay timer?
Post by: PLCwannabe on March 01, 2023, 12:24:41 PM

Makes sense now.

Title: Re: Should Reset Range override off-delay timer?
Post by: PLCwannabe on March 05, 2023, 05:32:38 PM

Can I use the $BottomofScan to override a PID loop that is in auto, by writing directly to the analog register? (RY0)

Title: Re: Should Reset Range override off-delay timer?
Post by: BobO on March 05, 2023, 06:00:31 PM

Quote from: PLCwannabe on March 05, 2023, 05:32:38 PM

Can I use the $BottomofScan to override a PID loop that is in auto, by writing directly to the analog register? (RY0)

That should work.