70 Glossary
WAGO-I/O-SYSTEM
750
753-647 DALI Multi-Master Module
Manual
Version 1.0.0
R
Random Address
The "Random address" (or "Search Address") is a 24-bit address generated
by an ECG during initialization.
Replace Function
In the event that exactly one control gear item (ECG) is defective and is
replaced by a non-addressed ECG, the "Replace" function can be used to
automatically assign the old short address of the previous control gear to the
new control gear and subsequently restore the settings for that control gear
using the data stored in the module database.
S
Single Master
In contrast to a Multi-Master, a "Single Master" does not support collision
detection and is not suitable for connection at the same interface with other
masters.
Settling Time
The "Settling Time" is the minimum time period between two frames.
V
Virtual Group
A DALI group is a logical combination of devices to which a common
group address is assigned so that these devices execute a common function
synchronously. These devices do not necessarily have to be physically
linked (e.g., the group for all emergency lighting systems, all hallway lights,
etc.).
In the event that the 16 group addresses available for this (0 ... 15) are not
sufficient, as further groups are required, an additional 16 virtual groups
(with group addresses 17 .... 31) can also be created. These groups cannot,
however, be addressed via a DALI group command, but only one after the
other by individual commands from the DALI-Multi-Master module. A
maximum of 8 devices may be assigned to each virtual group in order not
slow down or impede DALI data exchange on the bus.
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