using DAQ6601, how can I trap event for digital Input change of state without actually going into and scanning ports using timer.

[fernsf]

I have a photosensor input at Digital input on 6601, need to raise a event ASAP once change of state takes place on this digital input. I don't want to go and check every so often if state has changed.

[Filipe A.]

Hello;

Software interrupts are not supported with the 6601 board. If you need to generate an interrupt when a line state changes, you will need to use one of the digital boards, such as 650x or 653x.
Hope this helps.
Filipe

[fernsf]

Thanks...Filipe