Product manual

TAC Xenta Server – Gateway, Technical Manual B Protocols
Schneider Electric Buildings AB, June 2011 155 (184)
04-00124-06-en
B.5.3 BACnet Target Devices
One or more slave devices are added to the BACnet MS/TP interface
node in the network pane of XBuilder, as shown for the Panel device of
the SrlSim example network in the following screenshot.
Device Template
Device templates having a [BACnet] filename prefix are used to create
BACnet MS/TP network devices in XBuilder. Subsequently, each
device node is used to configure communications with the physical
slave it represents on the target network.
Device Properties
Address – Allows the required device address to be entered. The
entered number should correspond to the unique address of a slave
device on the MS/TP network (0 to 254).
Device Status Signal
For each device the BACnet MS/TP driver generates a communication
status signal.
online – Flags ONLINE during normal device communications,
and will change to OFFLINE if communications with the slave
device have failed. An OFFLINE condition normally indicates an
incorrect device address having been entered, or by incorrect wir-
ing of the network connection to it.
Only slave devices should be added into the XBuilder tree (master
devices are completely independent of each other). However, if a master
node can also act as a slave then it can be added to XBuilder so that the
Xenta 913 will be able to exchange data values with it.
Note
The same device address can be used for multiple devices to
allow splitting of a large set of I/O values into smaller pseudo
device types. This can be useful for target devices that contain
several logical data value “groups” because each group can
appear as a separate node in XBuilder.