Programming
DUO
DMX
GATEWAY
46 BAB TECHNOLOGIE GmbH
DUO
DMX
GATEWAY
(EXCEPTION) FEEDBACK SIGNAL OF ANY INFORMATION FROM THE DMX WORLD
PLEASE NOTE: THIS IS ONLY NECESSARY, IF ANY STATUS IS TO BE ACTIVELY SENT FROM DMX TO KNX
(VERY HIGH TELEGRAM LOAD!)!
BY DEFAULT, THE DUODMX GATEWAY SENDS STATUS FEEDBACK SIGNALS TO KNX WITHOUT THIS
KIND OF FEEDBACK SIGNAL!
To allow for sending and receiving on a DMX line at the same time, it is possible to establish a link
between interfaces. ONLY IF, for example; DMX Out 1 is defined as master and DMX Out 2 is defined as
slave, YOU MAY connect both DMX interfaces directly with each other at the terminal.
To receive the DMX channel values as KNX telegram in slave mode, the corresponding output of the
DMX interface in slave mode must be provided with an appropriate (feedback signal) group address. In
this context, only the following communication objects of the dimmer channels are relevant (
Dimmer
Out 1
and
Dimmer Out 2
):
1 bit: DPT 1.001 (EIS 1 Switch), value: [0.1]
1 byte: DPT 5.001 (EIS 6 percent), value [0 – 100%, step size 0.4%]
If the DMX interface 2 is configured as slave, as in the example above (orange arrow), both
communication objects of the corresponding DMX channel can be connected in
Dimmer Out 2
with the
addresses for the status feedback signal.
Figure 42: Connection with addresses for status feedback signal
Note: If you configure one DMX interface as DMX master and one DMX interface as DMX slave,
please make sure not only to send on the group address of the configured DMX slave interface on
KNX (the actual value coming from DMX) but also the feedback signal on the group address(es) of
the DMX master (the current value of the communication object).
“Dimmer Out 2”
configured as SLAVE
