Siemens SINUMERIK 840D sl Commissioning Manual page 990

Service and diagnostics
5.3 Setting of the service switch (PCU 50.5 only)
5.3 Setting of the service switch (PCU 50.5 only)
Intended use
The "PCU Hardware Service" component as part of the PCU Base software provides a
function to read-out the switch positions.
Figure 5-2
Meaning of switch positions
Only the settings of the service switch that are relevant for the commissioning engineer are
listed:
Switch setting
96
Rotary coding switch (hexadecimal)
Mode of operation
0 ---
6 Users
9 Service
A Service
C Service
D Service
E Service
Function
Normal operation (default setting)
Reserved for additional software
Headless operation without OP/TP
Firmware recovery
Checking
Diagnostics
Booting from the emergency boot system
Commissioning Manual, 02/2012, 6FC5397-1DP40-3BA0
PCU-Basesoftware (IM8)