User Manual

Network architecture
BACnet architecture (MLN & ALN)
14
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14 Network architecture
The Desigo system is divided into three network levels:
● Management Level Network (MLN)
● Automation Level Network (ALN)
● Field Level Network (FLN)
This classification is based on the functions performed at a given level, rather
than on the communications protocol or medium. The MLN and ALN use the
BACnet protocol. The transport protocol (Data Link Layer) is LonTalk or IP. The
FLN uses LonWorks, KNX and MS/TP technology.
14.1 BACnet architecture (MLN & ALN)
Structuring
BACnet defines the following structuring of the network topology:
IP segment 3
Desigo CC 3
PXG3.W100
PXC #1 PXC #2PXC #1 PXC #2PXC #1PXC #2PXC #1
IP segment 9
PXC3/DXR2 #3, 4, 5, 6, 7, ...
PXC3/DXR2 1#
PXC3/DXR2 2#
PXC3/DXR2 1, 2, 3, ...#
BBMD
Desigo CC 1
PXC00-U
RXB 1# RXB 2#
KNX segment (FLN)
BACnet Internetwork
BACnet Network #4BACnet Network #3BACnet Network #2BACnet Network #1
BACnet Network #100
IP segment 1
IP segment 2
IP segment 5
IP segment 6
IP segment 7 L segment ON W ORKS
Desigo CC 2
RemoteArea: Zürich
IP segment 4
I
P
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8
Management
Level
Network
Automation
Level
Network
Field Level
Network
PXG3.M/L