Operational Description
MECps
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2
Operational Description
In KNX network installations, MECps640 supplies the KNX TP line that is connected as subline
and simultaneously, can be used as line coupler or line repeater. Depending on the selected
application, MECps640 operates with its default settings after connecting to mains supply.
Setting a correct Individual Address is necessary. Only Individual Addresses x.y.0 are allowed.
2.1
TP Coupler Application
When MECps640 receives telegrams that use Individual Addresses as destination addresses
(for example during commissioning), it compares the receivers´ addresses with its own
address and decides on that comparison whether it has to route the telegrams or not.
When MECps640 receives telegrams that use group addresses as destination addresses, it
reacts in accordance with the parameter settings. During normal operation (with Group
Telegram routing set to filter), MECps640 only routes telegrams whose group addresses are
entered in its filter table.
If a telegram is routed by MECps640 without receiving the corresponding acknowledgement,
i.e. due to a missing receiver or to a transmission error, the telegram will be repeated up to
three times (depending on the ETS setting). With the parameters „Repetitions if errors
...
“,
this function can be configured separately for each line and both kinds of telegrams. It is
recommended to use the default parameter setting.
If not configured as Line Coupler, the ETS application program “TP Coupler” has to be
downloaded to the device. Under the ETS Information tab, the application can be changed.
Updating the application program version can also be done here.
Figure 3: TP Coupler Application Program
