Siemens SIMATIC NET SCALANCE XM-400 Series - C-Plug;Key-Plug; Function of the C-PLUG;KEY-PLUG

4.8 C-PLUG/KEY-PLUG
4.8.1 Function of the C-PLUG/KEY-PLUG
NOTICE
Do not remove or insert a C-PLUG/KEY-PLUG during operation
A C-PLUG/KEY-PLUG may only be removed or inserted when the device is turned o󹪜.
Saving con󹪝guration data and enabling layer 3 functionality
A PLUG is an exchangeable storage medium for storing the con󹪝guration data of the device. This
allows fast and uncomplicated replacement of a device. The PLUG is taken from the previous
device and inserted in the new device. The 󹪝rst time it is started up, the replacement device has
the same con󹪝guration as the previous device except for the device-speci󹪝c MAC address set by
the vendor.
A C-PLUG stores the current information about the con󹪝guration of a device.
In addition to the con󹪝guration, a KEY-PLUG also contains a license with which layer 3
functionality is enabled.
Note
The device can also be operated without a C-PLUG/KEY-PLUG.
How it works
Operating mode
In terms of the C-PLUG / KEY-PLUG, there are three modes for the device:
• Without C-PLUG/KEY-PLUG
The device stores the con󹪝guration in internal memory.
This mode is active if no C-PLUG/KEY-PLUG is inserted.
• With unwritten C-PLUG/KEY-PLUG
If an unwritten C-PLUG/KEY-PLUG (factory status or deleted with Clean function) is used, the
local con󹪝guration already existing on the device is automatically stored on the inserted C-
PLUG/KEY-PLUG during startup.
This mode is active as soon as an unwritten C-PLUG/KEY-PLUG is inserted.
• With written C-PLUG/KEY-PLUG
A device with a written and accepted C-PLUG/KEY-PLUG ("ACCEPTED" status) automatically
uses its con󹪝guration data during startup.
Acceptance is only possible if the data was written by a compatible device type.
This mode is active as soon as a written C-PLUG/KEY-PLUG is inserted.
Description of the device
4.8 C-PLUG/KEY-PLUG
SCALANCE XM-400
38 Operating Instructions, 03/2021, C79000-G8976-C306-10