ON to OFF operation

[etwiggar]

I'm trying to setup an application that is monitoring two incoming channels.  Both channels are either 4.5v or 0v. (On or Off).  I would like to set up Dasylab to send me an email when Channel 1 goes from ON to OFF (4.5v drops to 0v) while Channel 2 remains ON.  I know how to get Dasylab to send an email, but it's figuring out the "ON to OFF" part with Dasylab that's giving me some trouble.   Any help would be appreciated. 

Thanks, Ed

[Glenn_United_Pumps]

Hi,

To be able to detect the condition you can use "logic gates" as your signals are essentially TTL "digital" signals.

the equation would be CH1 inverted AND CH2 which would give you an "on" output when channel 1 is low while CH2 stays high. The logic modules can be found under "mathematics> logical operations".  - feed signal 1 through a unary (single version of binary) module and set to invert input, then feed this signal with signal 2 into a binary module with the "AND" operation set.

If you only want a pulse output when this codition occurs simply add a "trigger" to the output of the above circuit and set it to ouput a pulse on a rising edge and that should work 🙂

Hopefully this helps you a little

regards

Glenn