Virtual KNX Group Addresses
Virtual KNX group addresses are used for internal communication within the controller and with the IHC interface and Hybrid module.
Format
A virtual group address is a 17-bit integer, with the most significant bit always set to 1, represented in a three-part format:
a/b/c – where each part is a decimal number separated by slashes.
Virtual addresses use the same format as standard addresses but with a different range for the first component.
|
Size (bits) |
Range |
|
|---|---|---|
|
a |
6 |
32 – 63 (instead of 0 – 31) |
|
b |
3 |
0 – 7 |
|
c |
8 |
0 – 255 |
Addresses with zeroes in one or two components are valid, such as:
-
32/0/0
-
63/1/0
-
42/0/7
Address Range
-
Lowest valid address: 32/0/0
-
Highest valid address: 63/7/255
-
Total possible addresses: 65 536 (32 * 8 * 256 = 65 536)