saia-pcd.com
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SBC Software
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SBC S-Web Technology
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Communication &
interaction
Communication & interaction
DALI communication library
The current DALI standard does not guarantee a real multi-master function. Multi-master capable products such as those
of Tridonic, Osram or Zumtobel are either based on the new draft DALI extension E DIN62386-103 (2011-08), or accept the
loss of telegrams in bus collisions. Permanent polling, e.g. of the status, should therefore be avoided in “multi-master”
projects. The maximum number of DALI master devices can be restricted to 8 units, for example, depending on the product
and hardware manufacturer.
Commissioning and servicing made easy
The “DALI F26x Driver” Fbox is positioned once when the program starts in order to initialise it.
The “Configuration Manager” Fbox then parameterises all the DALI participants on the bus.
The FBox also provides pre-defined symbols for extended use, e.g. in S-Web. The parameters
can also be used securely in the PCD file system. The “Backup to Flash” FBox stores all DALI
parameters in parallel in two files. This guarantees the retention of data in PCD systems
without the need for batteries, e.g. in the Smart-RIO PCD3.T666.
When commissioning DALI systems, it is usual to install all DALI participants then issue
the addresses and set the parameters via the DALI commissioning software. The “Random
addressing” and “Exchange addresses”modules are available in the Saia PG5® – DALI library for
this purpose.
Parameterisation takes place after the addressing process using the “Configuration manager”
FBox. To provide a better overview, group and scene parameters can alternatively be set using
the “Edit Groups” and “Edit Scene Levels” FBoxes.
Operation
The “Send Command Inputs”, “Send Command Online”, “Send Power Control” and “Send Scene”
FBoxes are available for transmitting DALI commands. These FBoxes cover all standard DALI
commands.
The receipt of master telegrams is also supported by the “Receive Commands” and “Receive
Raw” FBoxes. “Receive Raw is useful for receiving non-standard telegrams. The raw data can
then be processed further in the application program.
The lamp status can be requested using the “Read Status” FBox. The «Query numeric” FBox
provides the application program with access to a further 21 DALI standard data points such
as the current light level.
The “Read Memory” Fbox is used to read any of the data from a DALI device. It is therefore
possible to request brightness and presence information from one sensor, which would not
be accessible with the DALI standard methods.
Driver module
(1 × per interface)
Status monitoring
(1× per monitored element)
Lighting control on/off, dimmable
(1× per lamp/group)
Lighting control direct
(1× per lamp/group)
Scene controller
(1× per scene)
