L-INX User Manual
230
LOYTEC
Version 4.0
LOYTEC electronics GmbH
6.
Press the
Export
button.
To Create an M-Bus Device Template File Using a Device Template
1.
Right-click on the folder
of the device template that has to be exported or its data point
folder and select
Export Device Template…
from the context menu.
2.
Proceed as described above to export the template in the
Export M-Bus Device
Template
dialog.
10.7.7 Poll Groups
In an M-Bus network, the master has to poll the slave devices. Input data points are
therefore attached to a poll group. If nothing else is specified, the default poll group is used
for input data points. The default poll group has a poll cycle of 60 seconds.
Three different types of poll groups can be specified:
Time-based: The poll group is triggered on a time base. This means that after a
specific time – the poll cycle – the poll group is processed.
Trigger-based: The poll group is triggered on a special trigger data point. As soon
as the trigger condition is met, the poll group is processed.
Trigger-based with synchronization: This type is similar to the trigger-based. The
difference is that when the trigger condition is met, a broadcast synchronization
message is sent over the M-Bus. This causes the devices which are able to perform
a sync operation to store special data points for later reading. After the broadcast is
sent, the poll group is processed.
Tip:
If an M-Bus device is only able to process default read requests, it is advisable to attach all
data points of this device to the same poll group (this increases the performance).
The poll group a data point is attached to can be changed in the properties view of the data
points. The poll group can also be changed for multiple data points using multi-select.
