Specifications

Configuration / project engineering
6.5 LED display
SCALANCE X-400 BA
114 Operating Instructions, 03/2009, C79000-G8976-C186-07
6.5.1 Startup behavior of the SCALANCE X-400
Startup behavior of the IE Switch X-400
While the device is starting up, the red LED on the power module indicates the current status
of the device. For more detailed information, refer to the following table:
LED on LED off LED flashing
During device startup Device starts or a
fault/error was
detected
Device startup
successful
Error in keyboard input over
serial interface or bad
firmware image
During operation Fault/error
detected
Operation not OK
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Figure 6-5 Error LED on the power module
6.5.2 Selecting the display modes
Selecting the display modes
Press the SELECT / SET button on the CPU module until the D1 and D2 light up on the CPU
in the required combination. The selected display mode is then activated.
There is an automatic switchover to Dmode A if the button is not pressed for longer than one
minute.