Re: Hail request?

[Charles Sullivan <cwsulliv@xxxxxxxxxxxx>]

PCS uses the Hail_Request and Hail_Ack signals to implement a
0.5% micro-dim/bright in their dimmers.
    <http://www.hometech.com/acrobat/tech_note_2.pdf>
If that's the source of Doug's log entry, one would expect to
see a _lot_ of them.

X10's CM15A firmware responds to a Hail_Request with a Hail_Ack,
but always on housecode A (unless they've since fixed the
firmware). I've never seen it send a Hail_Request by itself.

On Wed, 16 Nov 2005 17:48:59 +0000, Dave Houston wrote:

> It could mean another controller is checking to see whether anybody is using
> the B housecode. That was X-10's intention. Few implementations use it.
>
> These days (post X-10's patent expiration) it might mean that some third
> party is using it in a non-conventional way. I vaguely recall seeing
> something recently that was using it but cannot recall the details.
>
> Or it might just be the detritus from a powerline collision between two
> valid X-10 signals. While rare, it does happen.
>
> How often do you see it?
>
> Have you recently added some new X-10 gizmo?
>
> "Doug Fitzpatrick" <gdfitzpat@xxxxxxxxx> wrote:
>
>>I'm looking at my Homseer Event log and see "B Hail Request". What
>>does that mean? Thanks