Re: Re: motion detectors: need some input

[Kevin Hawkins <lists@xxxxxxxxxxxxxxxxx>]

Yes X10 is a very slow protocol - it takes a minimum of just over 1
second (from memory) to address different devices on different
housecodes - this is quite normal and is the reason that I was
suggesting using a Viom / Netiom or similar alternative before. You will
not be able to reduce this aspect of the delay whilst you use X10 I'm
afraid.

Of course you have a triple delay to the last light switching for the
reasons (in your sequence) below.  Do you always want both the lights to
always come on together ?  If so then set them both to the same
housecode and unit code, then they will work as one. Likewise if you do
this then you could get the RF keypad to switch the lights directly
(rather than via xPLHAL) which will take another delay out.  So you will
be 3 times faster to the last light switching. You can still have xPLHAL
watch for the lights being turned ON this way and action a delayed turn
off via a script in xPL HAL or something should you so wish.

xPL is a very fast protocol in comparison with X10 as it can action a
request in one Ethernet udp packet  . If it was directly connected to an
xPL enabled relay eg Netiom this would be very fast, say 25ms or so -
almost instantaneous - if it has to receive the trigger and send the
command out eventualy using X10 it is beholdent on the X10 protocol and
hence the result will suffer those delays, once on input and once on
output. - 2500+ ms - approx an order of magnitude worse.

Kevin


Tom Van den Panhuyzen wrote:

>Hi David,
>
>Well, about 25% of the setup is completed now: the lamps are
>controllable via X10 appliance modules.
>Switching on 2 lamps at the same time is just impossible: it sometimes
>takes 2 secs for the second lamp to switch after the first.
>
>
>Scenario:
>- press remote (keychain remote KR22)
>- rf receiver puts an X10 command on the wires
>- CM11 picks it up
>- xpl'ed: via determinators switch on 2 lamps
>- CM11 sends ON for first lamp
>- CM11 sends ON for second lamp
>
>The remote is a real ##@!!  I have to press it for about 2 secs
>otherwise the rf doesn't pick up the signal.  Then I need to be close
>enough to the receiver (too close to be useful: in the kitchen to turn
>on the lights in the backyard lol...)  If the remote picked up the
>signal after about 1 sec the first lamp switches.  And 1 to 2 secs
>later the second lamp.
>
>I'm guessig it is the CM11 that cannot put X10 commands faster on the
wire ?
>
>Hopefully the TMA4 will work faster (i.e.: using a physical switch
>connected to the TMA4, thereby bypassing remote + rf receiver).  The
>remote will not be used a lot.  In fact I bought it only to be able to
>program the TMA4's.
>
>Regards,
>Tom
>
>



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