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IDC toggle delay off

Wilfred Sijtsma | Hytrans 4 weeks ago in IQANdesign updated by Thomas Moberg (System support) 2 weeks ago 3

Why is the Delay off not taken into an Internal Digital Channel (IDC) in Toggle mode? The Delay on time works fine.

Hello Wilfred.

The delay off does work for the toggle when using it on IDC.

But when using toggle the delay off does not work when activating the blocking part of the IDC, it will directly turn off.

This is different from when you are not using the toggle, then the delay off time is not ignored when using the block.

So what i think you are doing is blocking the IDC.


My original goal was to create an alarm with hysteresis in 1 IDC. On the 'activating' side the 'Delay on' time must be reached to activate the alarm and on the 'blocking' side the 'Delay off' time must be reached to deactivate the alarm. Between the 'activating' and the 'blocking' there is a 'not switched area' in which the alarm must remain active. I tried to create this with a 'Latching or' or 'Toggle'. Both have their limitations which means that I have to make the connection (against my principle) in 2 IDC's. I have now used the latter as a workaround.

If the 'Delay off' had worked with the 'Toggle' as with the 'Delay on', the circuit would have worked in 1 IDC.

You could still do this in one IDC if you use a dual object that is controlled by the channel itself and then you have the condition for on and off as the result of that.

Like this.

Image 4908