Start-Up
4.2 Turning on and booting the control system
4-54
SINUMERIK 802S
6FC5 597–2AA00–0BP2 (01.02)
The switch position comes into effect with next power–up and is displayed on the screen
when the control system powers up.
Start-up switch(software)
In addition to the hardware start-up switch, the following functions can also be carried out in
the Diagnosis/Start-up/Start-up switch menu:
S Normal power–up (Start-up switch position 0)
S Power–up with default machine data
(Start-up switch position 1)
S Power–up with saved data (Start-up switch position 3)
These power–up functions have a higher priority than the hardware start–up switch.
Booting the control system
When the control system is turned on for the first time, an initial state of the control system is
established automatically. All memory areas are initialized and are loaded with previously
stored default data.
The PLC area of retentive bit memories is explicitly erased.
The control system changes to the JOG/Ref.point approach mode and the yellow LED DIAG
flashes (see Fig. LEERER MERKER).
This initial state is the precondition for error-free start-up of the control system.
When the control system is already turned on, start-up is also possible in the Diagnosis menu
(see User Manual).
Normal booting (Start–up switch position 0)
Result
User data exist, no boot
error
Control system changes to
JOG/Ref.point approach mode,
yellow LED DIAG (see Fig. 4-1) flashes.
Data in user memory
faulty
Backed-up user data are loaded from the permanent memory into
the user memory (as in start-up switch position 3). If no valid user
data are in the permanent memory, the default data are loaded (as in
start-up switch position 1).
Any deviations from normal booting are displayed on the screen.
Booting with delault machine data (Start–up switch position 1)
Result
The user memory area not loaded with default data is erased,
and the default machine data are loaded from the permanent memory into the user memory.
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