Re: xPL-DMX_Project

["Frank Mc Alinden" <fmcalind@xxxxxxxxxxxxxx>]

Hi John

> The fact that you're seeing a comms failure on your relay board points
> more to a hardware DMX problem I would have thought

Its doing some really wierd stuff ...I have decided to get an ir to relay
interface and control the irrigation via HV/FirM..........I suspect theres
a
bug in the relay software....
I had the relay board only connected to the main controller via 4m of
shielded cable........
Thanks
Frank


----- Original Message -----
From: "John B" <home-automation@xxxxxxx>
To: <ukha_xpl@xxxxxxx>
Sent: Monday, April 18, 2005 4:22 PM
Subject: RE: [ukha_xpl] xPL-DMX_Project


>
> Hi Frank,
>
> >             I have been doing some bench testing of the
> > xPL-DMX relay board and i seem to be getting some strange
> > behaviour with the DMX Kit....
> >
> > I have seperate Events and Determinators created to turn each
> > zone (relay) on and off as required , but when i manually
> > trigger either the Events or Determinators the Determinator
> > is logged in the xPL Monitor  but sometimes the Dmx relay
> > doesnt activate/ deactivate ...and quite often if its relay 4
> > the comms lost led on the relay board flashes....My
> > Determinators all appear ok.....
> >  At this stage im relucatant to use it for the irrigation
> > system...........
>
> The only problem I've seen is if you send more than one DMX command in
> the same determinator, the second command gets lost, as there needs to
> be a 100ms gap between transmissions to the DMX unit.
> The latest version of the service will fix this problem - I'll
hopefully
> post it this evening.
>
> The fact that you're seeing a comms failure on your relay board points
> more to a hardware DMX problem I would have thought.
>
> How many devices have you got connected? What sort of cabling/cable
> lenghts, and are you using a termination resistor on the last DMX
> device?
>
> Regards,
>
> John
>
>
> xPL Links: http://www.xplproject.org.uk http://www.xplhal.com
http://www.xpl.myby.co.uk
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>



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