Carel plug-in Manuel d'utilisateur télécharger pdf (Page 34)

pCOWeb +030220471 – rel. 1.0 – 02.05.2007 34

7 BACNET

pCOWeb can recognise queries sent by a

supervisor that uses the BACnet protocol (Building

Automation Control Networks), in the following two

versions:

BACnet/IP (Addendum A/Annex J)

BACnet Ethernet ISO8802-2 over 8802-3

The two standards use the same physical means for

carrying the data (Ethernet RJ-45 network) but differ

as regards the different ways the data packets are

encoded. If BACnet is used, during installation the

proper version needs to be set to coincide with the

type used by the supervisor.

A complete description of the BACnet protocol is

not within the scope of this document. The system

integrator, who is usually responsible for setting the

various parameters, checking network

communication and setting up the supervision

system, should know how BACnet works.

The basic BACnet parameter configuration page is

shown in

Figure 7.a above; for advanced

configuration, go to

http://ksa.carel.com and

download the BACset software; the main screen of

this program is shown in

Figure 7.b. All settings become active at next pCOWeb

reboot.

BACset can be used to set all the properties of the BACnet objects supported by

pCOWeb, save them on pCOWeb or on the PC for later use when required.

The BACnet configuration is saved on pCOWeb in a number of files in the

/usr/local/root/flash/etc/sysconfig directory in the same way as the other

configurations.

BACNET PICS

BACnet is a scalable protocol, that is, it features a vast array of functions, some of

which are obligatory, others whose implementation is left to the discretion of the

manufacturer. For a product that uses BACnet, the document that analytically

describes the type of functions implemented is extremely important.

This document is called PICS (Protocol Implementation Conformance Statement)

and for the pCOWeb is available at

http://ksa.carel.com.

NOTE The clock on the pCOWeb can be set using specific commands in the

BACnet protocol. When using this method, it is recommended to

disable synchronisation with the time on the pCO controller (see

8.6 on

page 40).

Figure 7.a - BACnet: basic configuration

Figure 7.b - BACset software for the advanced pCOWeb BACnet configuration

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 79 80

Commentaires sur ces manuels

Pas de commentaire

Carel plug-in Manuel d'utilisateur Page 34

Commentaires sur ces manuels

Produits connexes et manuels pour Thermostats Carel plug-in