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[kenny]

Has anyone else had the experience that
signals from motion detectors throw off the
system?  I can't prove it, but it seems to me
that when I look at the activity log after
something didn't happen and the unit seems to
be working otherwise, there was a lot of
traffic from motion detectors.

I'd be interested in hearing if anyone else
has observed this and if anyone has come up
with any solutions.

Thanks.

Kenny

[steve l.]

Are you using any TM751's as transcievers?
They don't wait their turn to transmit to the
powerline but just dump the recieved RF codes
directly to the powerline.

I'm not 100 % certain, but I think the CM15A
is supposed to act like a RR501 and wait for
the all clear to transmit on the powerline as
well.  If it doesn't, then that too could be
part of the problem.

[Brian H]

Also any X10 signal repeaters in the loop?
The cm15a is reported to be a polite device.
Meaning it will wait to send it's data if it
see any X10 signals on the power line. TM751
type tranceiveers don't wait. I believe the
RR501 does wait.

[joe s.]

There was a forum theory way back in early
December that a high level of motion sensor
traffic "filled up" the CM15a causing it to
stop.  That was proven not to be true - but
some theorized that enough sensor traffic
"might" corrupt something in the CM15a
causing it's frequent lock-ups.  Again never
proved - but those that had lots of sensors
in their systems did seem to fail more
quickly than those who didn't.  Nobody really
knows if there is a direct correlation or
just coincidence - since those with more
sensors usually have more modules (eg. less
remaining memory) which also seems connected
to rapid failure.

If you've been around a while - you'll
realize that this note is just an associated
history lesson - not an answer.