Description of the device
4.8 C-PLUG/KEY-PLUG
SCALANCE XM-400
40 Operating Instructions, 09/2018, C79000-G8976-C306-08
Operation with C-PLUG/KEY-PLUG
The configuration stored on the C-PLUG/KEY-PLUG is displayed via the user interfaces.
If changes are made to the configuration, the device stores the configuration directly on the
C-PLUG/KEY-PLUG, if this is in the "ACCEPTED" status. The internal memory is neither
read nor written.
Inserting a C-PLUG/KEY-PLUG that does not contain the configuration of a compatible
device type, accidentally removing the C-PLUG/KEY-PLUG or general malfunctions of the C-
PLUG/KEY-PLUG are signaled by the diagnostics mechanisms of the device (LEDs, Web-
based management (WBM), SNMP, Command Line Interface (CLI) and PROFINET
diagnostics).
The user then has the choice of either removing the C-PLUG/KEY-PLUG again or selecting
the option to reformat the C-PLUG/KEY-PLUG.
Replacing the C-PLUG/KEY-PLUG
Position 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.
The device checks whether or not a C-PLUG/KEY-PLUG is inserted at one second
intervals. If it is detected that the C-PLUG/KEY-PLUG was removed, there is a restart.
If a KEY-PLUG was inserted in the device, the device changes to a defined error state
following the restart.
The C-PLUG/KEY-PLUG slot is on the top of the device housing.
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