User Manual

System overview
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CM110664en_07 33 | 353
Defaults and rules
The following defaults and rules apply when you engineer the object name in
the XWP Hierarchy Viewer:
● The Free Designation (FD) can be max.69 characters.
● Only ISO-Latin-1 code points from [32..127] and [160..255] may be used.
This excludes all characters from [0..31] and [128..159]. These ISO-Latin-1
code points are identical to Unicode code points.
● No lead or post blanks [32] may exist and object names containing only
blank characters are not possible.
The FD values and the object name selection are transferred automatically to
the automation station or exported to the management platform during
compiling or loading in the CFC.
The CFC Editor checks during compilation if the object name is unique for each
automation station under the following rules:
● The same resulting object name may exist only once per automation
station. This also applies to the device object that must be unique in the
BACnet internetwork.
● The resulting object name may not correspond to a TD of another object in
a Device. The TD is used to resolve BACnet references.
Exceptions for object name assignment
Object names cannot be engineered in CFC charts or compounds. These
elements always define the TD and the object name is always the same as the
TD.
Special blocks, such as Heatcurve and Discipline I/Os generate reduced value
objects in the background whose object name per default is the TD during
compilation.
Free definition of the Device ID
The device ID (the object ID of the device object) can be freely defined. Range:
0…4'194'303
Flexible name selection (TD, UD, FD)
for each object
Technical Designation (TD)
B’Ahu10'TSu
User Designation (UD)
Areal_Geb1'L10-B01
Free Designation (FD)
My’’Crazy/Name1
ObjectName = TD
B’Ahu10'TSu
ObjectName = UD
Areal_Geb1'L10-B01
ObjectName = FD
My’’Crazy/Name1