ABB i-bus KNX Product Manual page 31

®
ABB i-bus KNX
Commissioning
Limit number of sent telegrams
Options:
The load on the KNX generated by the device can be limited with the limitation on the number of telegrams
sent. This limit relates to all telegrams sent by the device.
yes: The following parameters appear:
Enable communication objects:
yes
no
Time between two response telegrams
[1...255]
Options: 1...20...255
in period
Options: 50 ms/100 ms...1 s...30 s/1 min
This parameter defines the number of telegrams sent by the device within a period. The telegrams
are sent as quickly as possible at the start of a period.
Note
The device counts the number of telegrams sent within a parameterized period. As soon as the
maximum number of sent telegrams is reached, no further telegrams are sent on the KNX until
the end of the period. A new period commences at the end of the previous period. The telegram
counter is reset to zero, and sending of telegrams is allowed again. The current communication
object value is always sent at the time of transmission.
The first period (break time) is not predefined exactly. The period can be between zero seconds
and the parameterized time. The subsequent sending times correspond with the parameterized
time.
Example:
Maximum number of sent telegrams = 5, in period = 5 s. 20 telegrams are ready to be sent. The
device immediately sends 5 telegrams. The next 5 telegrams are sent after maximum 5 seconds.
From this point, a further 5 telegrams are sent on the KNX every 5 seconds.
"Acknowledge faults" 1 bit
Options: yes - acknowledgement is required
no - acknowledge is not necessary
Should a fault occur (ballast, lamps, DALI, operating supply voltage), the DGN/S sends a telegram
via the respective communication object on the KNX.
yes - acknowledgement is required: First of all the communication object Acknowledge faults is
enabled. As soon as the fault is rectified, a telegram with the value 0 is not sent automatically.
This fault signal still remains set until the fault is rectified and the fault signal is reset via the
communication object Acknowledge faults. Only then is a telegram with the value 0 sent via the
corresponding communication object. This can be very helpful when detecting sporadic errors
or events, which take place during unmanned monitoring periods.
no - acknowledge is not necessary: As soon as the fault is remedied, the DGN/S will reset the
fault message and automatically send the status change in dependence on the parameteriza-
tion to the communication object, e.g. Fault lamp. A telegram with the value 0 is sent. The
change in the malfunction state may take 45 seconds and depends on the number of con-
nected DALI devices.
DGN/S 1.16.1 | 2CDC 507 114 D0201 29