Description of the device
4.7 C-PLUG/KEY-PLUG
SCALANCE SC-600
Operating Instructions, 10/2021, C79000-G8976-C453-04
37
4.7 C-PLUG/KEY-PLUG
4.7.1 Function of the C-PLUG/KEY-PLUG
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 off.
Saving the configuration data
A PLUG is an exchangeable storage medium for storing the configuration 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 first time it is started up,
the replacement device has the same configuration as the previous device except for the
device-specific MAC address set by the vendor.
A C-PLUG stores the current information about the configuration of a device.
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 configuration 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 configuration 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) uses
the configuration data of the PLUG automatically when it starts up. The requirement
for acceptance is that the data was written by a compatible device type.
If there is configuration data in the internal memory of the device, this is overwritten.
This mode is active as soon as a written C-PLUG/KEY-PLUG is inserted.
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