L-Gate User Manual 135 LOYTEC
Version 3.2 LOYTEC electronics GmbH
2. Select the math object in the data point list.
3. Right-click and select Configure Math Object … from the context menu.
4. Edit the math object as described in Section 6.16.1.
5. To replace an input data point by another input data point without re-writing the entire
formula, click the Replace Input DP … button. This opens a data point selector
dialog. Select the replacement data point there.
6. To detach an input data point click the Detach Input DP button. This leaves the
respective variable slot empty.
7. To finalize the edit click on Save Changes
6.17 Mapping CEA-709 and BACnet Schedules
6.17.1 Mapping and Limitations
Mapping schedulers and calendars is realized by creating connections between schedulers,
and connections between corresponding calendars. The information in a scheduler
connection is synchronized between its participants. When starting up, however, it is
important to define where the source of the information is located, i.e., the actual execution
of the schedule takes place. If the schedules and calendars are out-of-sync when the system
starts, the information from the source schedule/calendar is distributed in the system. The
hub of a connection is always the source of the information. The targets receive the initial
schedules/calendars.
In the configuration software, only local schedulers and calendars that are hub in a
connection can be configured. The target schedules are synchronized automatically on the
device. Changing schedules or calendars on the Web UI or over the network automatically
synchronize the change with all members of the connection.
Since schedules and calendars in the two technologies have their own restrictions, the
mapping underlies a number of restrictions as well:
• Only schedules that schedule a single value can be mapped. In practice, all schedules
can be mapped where one only value can be defined per value preset, e.g., one analog
value.
• The target schedule, which is used to expose the actual scheduler to a different
technology, must not itself have data points attached, that are scheduled. The target
scheduler only acts as a shell that stores the daily schedules.
• CEA-709 schedulers, which schedule only one NV, but that NV is a structure (e.g.,
SNVT_switch) cannot be mapped to a BACnet scheduler. This is because the value
preset on the CEA-709 scheduler has two values to configure. This violates the one-
value rule.
• All calendars referred to by mapped schedulers must be added to a calendar
connection.
• On one port, only one calendar can exist. Therefore, all exposed calendars must be
added to a single connection. As a consequence all calendars are synchronized in the
system. There can exist only one calendar connection on a device, that contains all
exposed calendars.
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