Master Reset - Gira System 55 Pushbutton sensor 4 Standard 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 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 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 (approx. 1 Hz).
Release the programming button only after the programming LED starts flashing.
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 re-
mains 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 function uses the
firmware contained in the device that was active at the time of delivery (as-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 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 programming button for > 5 seconds until the programming LED
starts flashing quickly.
￭ Release the programming button.
The device performs a master reset. The programming LED is switched on.
The device restarts and is in delivery state.
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