User Manual

System configuration
Integration on room level
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Each BACnet device can communicate with another BACnet device in the
internetwork. A BACnet device in one internetwork cannot communicate with a
device in another internetwork.
A Desigo management station can be used to integrate the operation of several
BACnet internetworks and other systems (see Desigo system).
When defining the system configuration, FLN integrations (LonWorks, KNX) are
also added to the BACnet internetwork. In this way, the Desigo system can be
seen as a combination of several BACnet internetworks. Technically, the
individual FLN devices are not BACnet devices. They do not communicate via
the BACnet protocol.
BACnet PTP internetwork
BACnet PTP communication uses modem (telephony) or null-modem (RS232)
connections. Owing to the slow rate of data transfer via these connections, the
limits are lower for a BACnet PTP internetwork. Modem-based PTP
connections are considered obsolete and are therefore no longer used. The
BACnet PTP communication connects BACnet networks via BACnet half
routers.
BACnet network
A quantity of BACnet devices connected within an IP or LonTalk or MS/TP
network with specific (that means, the devices are in the same BACnet
Broadcast Domain) limits. In the case of the LonTalk or MS/TP network, the
limit is physical. In the case of an IP network, the network can be physically the
same, but the limit is determined by different UDP ports.
Local communication between two BACnet devices in a BACnet network is not
visible in another BACnet network.
IP segment
Sub-area of an IP network. IP segments are connected by IP routers.
In order to ensure that BACnet communications (Broadcasts) can always take
place across IP routers, BBMDs (BACnet Broadcast Management Devices) are
required. PXG3.L/M and PXC…-E.D over IP can be configured as BBMDs.
Individual BACnet devices in an IP segment can register with a BBMD as
foreign devices.
LonWorks segment (ALN)
Sub-area of a BACnet/LonTalk network. LonWorks segments are connected by
LonWorks routers. In most cases it is not necessary to divide a BACnet/LonTalk
network into several LonWorks segments (ALN).
It is not possible to use a LonWorks router because of the restricted length of
the data packets. An L-Switch can be used as a router on the ALN.
LonWorks segment (FLN)
Sub-area of a LonWorks network. LonWorks segments are connected by
LonWorks routers.
An L-Switch or a LonWorks router can be used as a router on the FLN.
LonWorks trunk (FLN)
Comprises all the devices connected on the FLN side of the PXC00.D/-E.D +
PXX-L1…. Consists of one or several LonWorks segments (FLN).
A LonWorks trunk (FLN) is the equivalent of a LonWorks network (FLN).
PX KNX integration
Comprises the integration of KNX devices that are connected on the FLN side
of the PXC001.D/-E.D.