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6
03/2006
6.3 Protection level concept
6-54
© Siemens AG 2006 All Rights Reserved
SINUMERIK 840D/810D Start-Up Guide (IADC) – 03/2006 Edition
In the Start-up area “Start-up”, you can change the set password using a soft
key. The password remains valid until it is reset with the soft key DELETE
PASSWORD. A POWER ON does not reset the password.
Reference material: /BAD/ HMI Advanced User Guide
BEM/ HMI Embedded User Guide
Protection levels 4 to 7 each require a different key switch position on the ma-
chine control panel. Three keys of different colors are provided for this purpose.
Each of these keys is capable of providing access to particular data areas.
Table 6-3 Meaning of key switch positions
Key color Switch position Protection level
(no key inserted) 0 = Remove key position 7
Black 0 and 1 6–7
Green 0 to 2 5–7
Red 0 to 3 4–7
Note
The associated interface signals can be found in DB10, DBX56.4–7, see
Reference material: /FB1/ A2, Basic machine function guide,
Various NC/PLC interface signals,
Section: Key switch position
The user can modify the protection levels for reading and writing data. This pre-
vents display and input of certain data. Only protection levels of lower priority
can be assigned to the machine data, setting data can also be assigned protec-
tion levels of higher priority. The commands APR and APW are used to change
the protection levels.
The protection levels of individual machine or setting data can be changed in
the SGUD.DEF file.
Example SGUD.DEF file:
%_N_SGUD_DEF
;$PATH=/_N_DEF_DIR
REDEF $MA_CTRLOUT_SEGMENT_NR APR 2 APW 2 (APR ... read rights)
REDEF $MA_ENC_SEGMENT_NR APR 3 APW 2 (APW ... write rights)
REDEF $SN_JOG_CONT_MODE_LEVELTRIGGRD APR 7 APW 2
M30
The file becomes active when the next _N_INITIAL_INI is read in. Different pro-
tection levels are specified for writing (changing) or reading (part program or
PLC).
Example:
MD 10000 is protected by levels 2/7, i.e. writing requires protection level 2
(corresponding to password) and reading requires protection level 7. To be able
to enter the machine data area you need at least key switch position 3.
Reference material: /PGA/ Programming Guide: Preparing for work
/FB1/ A2, “Various interface signals”
Protection level
4–7 key switch
Redefining protec-
tion levels
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