Siemens SINUMERIK FM-NC Installation And Startup Manual page 91

03.96
Protection levels
Protection levels 4 to 7 require a particular keyswitch setting on the machine
control panel. Three keys of different colors are provided for this purpose. Each
4–7
of these keys is capable of providing access to particular data areas. The asso-
ciated interface signals are located in DB10, DBB56.
Table 6-3
Redefinition of
The user can change the priority of the protection levels. Only protection levels
protection levels of a lower priority may be assigned to machine data. Levels of a lower or higher
priority may be assigned to setting data.
Example:
%_N_UGUD_DEF
;$PATH=/_N_DEF_DIR
REDEF $MA_CTRLOUT_SEGMENT_NR APR 2 APW 2
REDEF $MA_ENC_SEGMENT_NR APR 2 APW 2
REDEF $SN_JOG_CONT_MODE_LEVELTRIGGRD APR 2 APW 2
M30
The file becomes active when the next _N_INITIAL_INI is read in. Different
protection levels are specified for writing (changing) or reading (part program or
PLC).
Example:
MD 10000 is protected by levels 2 / 7, i.e. protection level 2 (password) must be
disabled to write it and protection level 7 to read it. Keyswitch position 3 or
higher is required to reach the machine data area.
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SINUMERIK 840D Installation and Start-Up Guide (IAD) – 04.00 Edition
6 Assigning Parameters to the Control and the PLC Program
Meaning of keyswitch positions
Key color Switch position
All (no key used) 0 = Remove key position
Black
Green
Red
File for global variables
(APR ... read authorization)
(APW ... write authorization)
6.3 Protection level concept
Protection level
0 and 1 6–7
0 to 2 5–7
0 to 3 4–7
7
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