L-DALI User Manual
132
LOYTEC
Version 5.2
LOYTEC electronics GmbH
midnight yesterday from midnight today). The resulting values are available in data points,
which can be visualized or trended.
The historic filters definitions are managed by historic filter resources. These are templates
and stored in the project resources. They can be applied to data points. When editing an
historic filter template, all existing historic filter relations are updated accordingly. For
more information on how to configure historic filters in the Configurator please refer to
Section 7.15.
6.5 CEA-709 Technology
6.5.1 Limitations for Local CEA-709 Schedulers
CEA-709 schedulers and the CEA-709 calendar adhere to the L
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standard objects.
For CEA-709, certain restrictions exist that need to be kept in mind. Attached data points
can either represent an entire NV or individual elements of a structured NV. CEA-709
schedulers may have several different groups of data points attached, i.e., the value preset
may consist of more than one element. For example, a CEA-709 scheduler might schedule a
SNVT_temp and a SNVT_switch and have 3 elements in each value preset as depicted in
Figure 120.
Figure 120: Example value presets in CEA-709 schedulers.
Priorities of exception days in a CEA-709 scheduler range from 0 (the highest) to 126 (the
lowest). The value 127 is reserved as a default for weekdays.
Further, the implementation as L
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standard objects requires the use of configuration
properties. If the number of CEA-709 schedulers or their capacities for daily schedules and
value presets is changed, the resource and static interface of the CEA-709 port changes. The
resources reserved for L
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calendar and scheduler objects can be changed in the
project settings (see Section 7.16.4). When downloading a project, the software verifies if
sufficient resources have been configured.
6.5.2 Limitations for CEA-709 Alarm Servers
Local CEA-709 alarming supports only one alarm server object. This alarm server object is
represented by the device’s L
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node object and facilitates the SNVT_alarm2 output
network variable. Acknowledging alarms in the alarm server is adhering to the L
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specification and relies on the RQ_CLEAR_ALARM mechanism.
Note:
On the L-DALI the alarm server object is pre-allocated for each interface. It is called
“DALI channel x Alarms” (x = 1-4).
6.5.3 Limitations for Local CEA-709 Trends
Local CEA-709 trend objects support trending multiple data points in all trend modes,
interval, COV, and trigger, including aligned intervals. The enable data point is also
supported. All data points can be NVs, registers or of any other technology. There is no
L
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object linked to the trend object. Consequently, trend data cannot be accessed
over a L
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mechanism.
