I'm pretty much aware of the basic options for monitoring the open/closed status of a garage door in an X10 HA system. You can chose beetween a sensor that normally open (NO) or normally closed (NC) and hook it up to a powerflash module. If I use a universal module to trigger the dry-contact switch I can detect that event and maintain the open/closed state of the door using whatever software I am using.
But what I'm wondering is if there's a way to get what amounts to a powerflash module that's bi-directional (in the X10 sense of that term) and can be queried for it's state information. I'm trying to avoid having to rely on software to maintain the open/closed state information, since this can add a point of failure to the system, for example:
- There might be a power failure, or my computer might reboot and lose the state table.
- If the Garage Opener has it's own RF opener, and this opener is used to open the door, and I use an NC sensor, this event won't be detected.
- Same as above, someone closes the door but the sensor is NO, no "close" is sent to the powerflash, no X10 event is logged.
It seems logical that someone else has tried to solve this problem before, so I just wanted to post and see if anyone has found a solution to this.
Thanks, as always.