Safe-State Mode - Gira KNX 5171 Operating Instructions Manual

Button, rocker

5.2.1 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 safe-state mode does not per-
mit controlling the outputs via the bus and by hand. The push-button remains passive
since the application program is not being executed (state-of-execution: terminated).
Only the system software is still functional so that the ETS diagnosis functions and
also programming of the device continue to be possible.
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 bus voltage.
￭ Press and hold down the top right and bottom right button.
￭ Switch on the bus voltage.
The safe-state mode is activated. The status LED flashes red slowly (approx.
1 Hz).
Only release the top right and bottom right buttons when the LED flashes.
Deactivating safe-state mode
￭ Switch off bus voltage or carry out ETS programming.
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