Master Reset - Gira KNX 5011 00 Operating Instructions Manual

Pushbutton sensor 4 Standard / Komfort System 55
7.2.1 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 activating 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 func-
tions and programming of the device are possible.
Activating safe-state mode
￭ Switch off the voltage.
￭ Press and hold down the programming button.
￭ Switch on voltage.
The safe-state mode is activated. The programming LED flashes slowly (ap-
prox. 1 Hz).
Release the programming button only after the programming LED starts flash-
ing.
Deactivating safe-state mode
￭ Switch off the voltage or carry out ETS programming.

7.2.2 Master reset

The master reset restores the basic device settings (physical address 15.15.255,
firmware remains in place). The device must then be recommissioned with the ETS.
In 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 func-
tion uses the firmware contained in the device that was active at the time of
delivery (delivered state). Restoring the factory settings causes the devices to
lose their physical address and configuration.
If the device - for instance as a result of errors in the project design or during com-
missioning - does not work properly, the loaded application program can be deleted
from the device by performing a master reset. The master reset resets the device to
delivery state. Afterwards, the device can be put into operation again by program-
ming the physical address and application program.
Performing a master reset
Precondition: The safe-state mode is activated.
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