Siemens SIMATIC NET SCALANCE W780 Series Configuration Manual page 424

Upkeep and maintenance
7.2 Device configuration with PRESET-PLUG
6. Remove the PRESET-PLUG.
7. Start the device either with a new PLUG inserted or with the internal configuration.
Procedure for installation with the aid of the PRESET-PLUG
1. Turn off the power to the device.
2. If it exists, remove the PLUG from the slot. You will find further information on this in the
operating instructions of your device.
3. Insert the PRESET-PLUG correctly oriented into the slot. The PRESET-PLUG is correctly
inserted when it is completely inside the device and does not jut out of the slot.
4. Turn on the power to the device again.
If there is a different firmware version on the device to be installed compared with that on
the PRESET-PLUG, an upgrade/downgrade of the firmware is performed. You can
recognize this by the red F-LED flashing (flashing interval: 2 sec on/0.2 sec off).
Afterwards the device is restarted and the device configuration incl. users and certificates
on the PRESET-PLUG is transferred to the device.
5. Wait until the device has fully started up.
(the red F-LED is off)
6. Turn off the power to the device after the installation.
7. Remove the PRESET-PLUG.
8. Start the device either with a new PLUG inserted or with the internal configuration.
Note
KEY-PLUG
If you have created the PRESET-PLUG from a KEY-PLUG, for operation with this
configuration, you require an inserted KEY-PLUG.
IN this case before recommissioning the device you need to insert the relevant KEY-
PLUG.
Note
Restore factory defaults and restart with a PRESET PLUG inserted
If you reset the device to the factory defaults, when the device restarts an inserted PRESET
PLUG is formatted and the PRESET PLUG functionality is lost. You then need to create a
new PRESET PLUG. The keys stored on the KEY-PLUG for releasing functions are
retained.
We recommend that you remove the PRESET PLUG before you reset the device to the
factory settings.
424
SCALANCE W780/W740 to IEEE 802.11n Web Based Management
Configuration Manual, 08/2018, C79000-G8976-C267-13