Page 15 - Advanced Course

KNX ADVANCED COURSE

1.1.2 Example: Setting Several Flags

Figure 3: Setting several flags

1.2 The Communication Flag ‘C’

Figure 4: Communication flag "C"

The communication flag is the “master switch” for communication i.e. if this flag is not
set, the object cannot send or receive telegrams. The communication flag is set for all
objects by default. It may be necessary to delete the communication flag in certain
configurations e.g. when objects are not used. If this is the case, it is highlighted in the
application descriptions of the manufacturer. If this object is linked to a group, an
acknowledgement is sent even though the communication flag has been deleted.

Home and Building Management Systems KNX Association
Flags Flags_E1212b.doc 4/13