The wiring of the X-BUS interface with 8 terminals 1A/1B to 4A/4B provides for the connection of an additional branch expander.
If the branch is not used then the terminals 1A/1B are used to connect to the next expander/keypad. Terminals 3A/3B and 4A/4B are then not used.
The following modules have branch expander wiring capability (additional terminals 3A/B and 4A/B):
Wiring of a branch expander
| Number | Description |
|---|---|
|
1 |
Previous expander |
|
2 |
Expander connected to branch |
|
3 |
Next expander |
|
4 |
Expander with branch |