Page 16 - Advanced Course

KNX ADVANCED COURSE

1.2.1 Example of a Communication Flag
In the case of the objects of the light mood push button depicted in the following diagram,
the communication flag must be removed for unused objects.

Figure 5: Removal of communication flag for unused objects

1.3 The Read Flag ‘R’

The read flag enables the object value to be read out i.e. a response telegram is only sent
after a read telegram if the read flag of the object has been set. This function is required
for visualisation, light scenes etc. to query the current object status. The read flag is not
set by default in most cases. The flag is set by many manufacturers for status objects.

Figure 6: The Read flag "R"

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