since march 3 2013 , the priority is managed in Crestron bacnet subsystem
just tried today with latest database AND cp3
and it's working
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--- In Crestron@..., "Alessandro Maldini" <alessandro.maldini@...> wrote:
Hi Matt,
beware of the fact that Crestron processor doesn?€?t handle the ?€?priority array?€? of BACnet IP protocol ; when the processor writes a BACnet object, it always does it with ?€?Priority 1?€? (probably highest than that used by the Honeywell control unit).
Alessandro
From: Neil Dorin
Sent: Thursday, December 13, 2012 2:41 PM
To: Crestron@...
Subject: Re: [Crestron] Bacnet Comms with Honeywell hawk centraline. S/w coach ax
BACnet uses UDP communication so there's no need to specify an IP address.
You'll need to have unique IDs assigned for the Crestron processor and the HVAC device you're talking to. It doesn't matter what ID you use as long as they're separate.
Probably the easiest way to handle HVAC control is to use an analog value to send to the HVAC system to request a set point, then the HVAC programmer supplies you with an analog input (input to his system) that will represent the current temp read by his sensor(s).
This way you only need 2 BACnet points per HVAC zone. Add the two for your processor as a device and his HVAC controller you're at 4 points for a single zone, plus 2 points for each additional. Under 50 points can be done with the free license in a 3-series processor.
-Neil Dorin
Sent from my iPhone
On 2012-12-13, at 1:31 AM, "mattstrads" <mailto:matt.stradling%40dawsonsav.co.uk> wrote:
Has anyone got any experience controlling this system over bacnet?
The hvac programmer hasn't done this before and needs to create backet points according to crestron. How can they do this?
Also in the crestron remote bacnet modules there seems to be nowhere to enter the remote IP address, only the name, id and port. Is this all the crestron needs? We did get some feedback about the remote device.
Any tips would be appreciated
Many thanks
Matt
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