Page 208 - Basic Course
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KNX BASIC COURSE
Figure 39: Example of a dynamic folder: all devices whose status is not yet “accepted”
8.4 Checking and editing filter tables, permitted group address
ranges
Line / backbone / or media couplers must be inserted for logical coupling, as soon as two
or more bus lines are created in a project. In order to avoid that group telegrams of one
line are sent unnecessarily on another line, each line coupler must be loaded with a filter
table. The filter table consists of a bit matrix in the (permanent) memory of the line /
backbone coupler. Each bit represents exactly one group address. If the coupler receives
a group telegram, it will check in the filter table if the bit has been set for this group
address. If so, it will redirect the telegram to another line. If not, it will do nothing.
Home and Building Management Systems KNX Association
KNX Project Design with ETS: Advanced ETS4_Planning complex_E0411c 32/59
