Thanks again Dave....
Your answer (with the "heartbeat" explanation) triggered another question...
I had to restart my computer a few minutes ago (the computer that runs AHP).
Before restarting it, in my AHP console, I was able to see that the DS10A module was in an "open" state.
After I restarted the computer, I restarted AHP.... but now the DS10A module is shown as "closed"... and the truth of the matter is that the contact is "open"... so, after restarting the computer, AHP is not showing the right status...
I'm sure that there is no way to "poll" the DS10A... (right?)
But in about an hour from now, and thanks to the "heartbeat", will AHP change and show the correct state ?
Thanks again Dave !