User Manual

Table Of Contents
Network architecture
LonWorks architecture (ALN)
14
CM110664en_07 199 | 351
Designation Description
MS/TP: 1 octet, MAC address (master 0-127, slave 0-
254, broadcast 255)
BACnet device address
Each BACnet device has a device address. This address is written to the device during the network
commissioning process. The BACnet device address is unique within the BACnet internetwork. The term
BACnet device address is an in-house term rather than an official BACnet term.
Designation Description
Device ID Object identifier of the BACnet device object. The device ID is unique within the BACnet
internetwork.
Device name The object name of the BACnet device object. The device name is unique within the BACnet
internetwork.
For information about the direct addressing of BACnet references to objects in other networks and media,
see
Desigo Ethernet, TCP/IP, MS/TP and BACnet
(CM110666).
14.2 LonWorks architecture (ALN)
With the LonWorks-based communication protocol complete networks made up of interoperable products
can be created. The protocol conforms to ISO/IEC 14908 (worldwide), EN 14908 (Europe), ANSI/CEA-
709/852 (U.S.) and is also standardized in China. See www.lonmark.org.
LonWorks is suited for use with different types of transmission media, such as twisted pair cables, power
line, RF, fiber optics or IP (TCP/IP and UDP/IP) It supports straightforward installation with different
cabling topologies (e.g., star or line). The connection of objects via bindings (e.g., standard network
variables (SNVTs), standard configuration properties (SCPTs)) can be defined at the project engineering
stage or can be adapted in the field.
Structure
The following figure shows the structure of a Lon network in the FLN
Key