Function Description
27
753-646 KNX/EIB/TP1 Module
Manual
Version 1.2.0
4.2
Data Exchange between KNX/EIB/TP1 Module and
IEC Application
The KNX module and IEC application differ in their communication method. To
ensure data exchange, the KNX module requires configuring.
In the IEC application, special function blocks are created for the KNX
communication; their variables are imported in the KNX configuration tool ETS.
Using this tool, KNX group addresses and application variables are connected
with each other and loaded as a mapping table into the module. Thus, the IEC
application and KNX module / TP1 network are configured for a common
communication.
4.3
Startup Behavior of the KNX/EIB/TP1 Module in
Device Mode
In order for the KNX module to operate in device mode, a node is created
between one WAGO controller and at least one KNX module with voltage
applied. The following startup behavior is also present when the bus node is
already operational and the IEC application has yet to be modified.
LED A, indicating the router mode of the module, will be flashing for 30 seconds.
LED E (device mode) is also flashing. The flashing signals the initialization phase
of the module. At this time, functions are not yet available.
In order for the KNX module to communicate with other stations in the network,
an IEC program is loaded into the controller. In this program, function blocks are
created which are required for the module communication. All relevant variables
will be exported as network variables as a SYM_XML file from the finished
program.
The SYM_XML file with the IEC network variables is imported using the
configuration software ETS and the WAGO-specific ETS-Plug-in.
The imported network variables need to be linked with the KNX group addresses
and loaded as a mapping table into the module. Telegrams are sent in the KNX
net via the KNX group addresses.
A checksum (CRC) is created within the controller. A fault-free download and
successful check is indicated by the permanent green light of LED E. If the LED
is still flashing, the IEC application requires verification.
If the module has been configured and has moved into device mode, group
telegrams, which were previously assigned the function “Send at reset”, are sent
via the bus. In this process, a delay is maintained between two sequential
telegrams. This delay can be set using the engineering tool software (ETS).
The KNX module is now ready to function, enabling a communication between
the IEC application and KNX module and - via the module - with connected TP1
networks.
