ABB i-bus KNX Product Manual page 27


ABB i-bus KNX
Commissioning
Sending and switching delay after
bus voltage recovery in s (2...255)
Options:
Telegrams are only received during the send and switching delay. The telegrams are not processed,
however, and the outputs remain unchanged. No telegrams are sent on the bus.
After the sending and switching delay, telegrams are sent, and the state of the outputs is set to correspond
to the parameterization or the communication object values.
If communication objects are read during the sending and switching delay, e.g. by a visualisation system,
these read requests are stored and a response is sent, after the send and switching delay has been
completed.
An initialisation time of about two seconds is included in the delay time. The initialisation time is the time
that the processor requires to be functional.
Limit number of 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 object
"Request status values" 1 bit
Options:
Via this communication object, all status messages can be requested provided that they have been
parameterized with the option after a change or request.

yes: The 1 bit communication object Request status values is enabled. The following parameter
appears:
2...255
How does the device behave with bus voltage recovery?
After bus voltage recovery, the device always waits for the send delay time to elapse before
sending telegrams on the bus.
no
yes
Max. number of sent 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.
no
yes
Request with object value
Options: 0
1
0 or 1

0: Sending status messages is requested with the value 0.

1: Sending status messages is requested with the value 1.

0 or 1: Sending status messages is requested with the values 0 or 1.
VAA/S x.230.2.1 | 2CDC 508 101 D0201 25