Siemens SINUMERIK 840D sl TCU 30.3 - Booting of the TCU; Messages During Booting

5.4.8 Booting of the TCU
5.4.8.1 Messages during booting
Messages when booting
While the TCU is booting, progress is displayed after the BIOS has been loaded and before
the operating system is started. In addition to messages, the current booting status is also
indicated by a progress bar. While the IP address is being determined via DHCP and the TFTP
is being downloaded (boot image), a progress bar indicates that booting of the TCU is not yet
complete, or that a fault has occurred.
The figure below shows the structure of these messages:
You can see the current boot phase below the progress bar. If a fault occurs, you can access
further information by tapping the field designated “Press F1 for details”. The “F1” symbol is
touch-sensitive.
Networking
5.4 Service and diagnostics
TCU 30.3
Manual, 09/2017, A5E40874197 69