Service and diagnostics
6.3 Setting the service switch
Setting the service switch
The service switch on the PCU 50.5 is a rotary switch with 16 possible positions.
The "PCU Hardware Service" component as part of the PCU Base software provides a
function to read-out the switch positions.
Meaning of switch positions
Only the settings of the service switch that are relevant for the commissioning engineer are
Details about the hardware of the PCU 50.5 is provided in the
Components and Networking Manual
Normal mode (switch setting in delivery condition)
PCU boots to the "SINUMERIK" welcome screen. Relevant if HMI software is
installed with autologon mode set. See also: Switching to the Service Desktop
during autologon mode (Page 89).
Reset BIOS to factory settings
Boot device at the USB interface, e.g. USB flash drive with emergency boot
See also: Bootable USB flash drive (Page 70)
Commissioning Manual, 03/2013, 6FC5397-1DP40-3BA1
SINUMERIK 840D sl Operator
PCU Base Software (IM10)