LB management
KNX RF push-button
7.2.1 Safe-state mode and master reset
Safe-state mode
The safe state mode stops the execution of the loaded application program.
If the device does not work properly - for instance as a result of errors in the project design or
during commissioning - the execution of the loaded application program can be halted by activ-
ating the safe-state mode. The device remains passive in safe-state mode, since the application
program is not being executed (state of execution: terminated).
Only the system software of the device is still functional. ETS diagnosis functions and pro-
gramming of the device are possible.
Activating the safe-state mode
￭
Switch off the voltage.
￭
Wait about 15 s.
￭
Press the top right and bottom right button.
￭
With the buttons pressed, switch the voltage back on and keep the buttons pressed for
more than 10 seconds.
The safe-state mode is activated. The status LED flashes red slowly (approx. 1 Hz).
Only release the the top right and bottom right buttons when the LED flashes.
Deactivating safe-state mode
￭
Switch off the voltage (wait approx. 15 s) or carry out ETS programming.
Master reset
The master reset restores the basic device setting (physical address 15.15.255, firmware re-
mains in place). The device must then be recommissioned with the ETS.
During secure operation: A master reset deactivates device security. The device can then
be recommissioned with the device certificate.
Devices can be reset to factory settings with the ETS Service App. This function uses the
firmware contained in the device that was active at the time of delivery (delivery state).
Restoring the factory settings causes the devices to lose their physical address and con-
figuration.
If the device - for instance as a result of errors in the project design or during commissioning -
does not work properly, the loaded application program can be deleted from the device by per-
forming a master reset. The master reset resets the device to delivery state. Afterwards, the
device can be put into operation again by programming the physical address and application
program.
Performing a master reset
Precondition: The safe-state mode is activated.
￭
Press and hold down the top right and bottom right button for more than 5 seconds until
the status LED flashes.
￭
Release the top right button and bottom right button.
The device performs a master reset. The status LED flashes quickly (approx. 4 Hz).
The device restarts and is in delivery state.
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