Siemens Sinumerik 840D sl Programming Manual page 45

For continuous access protection, the machine data for the execution rights and the access
protection for the corresponding directories have to be modified consistently.
In principle, the procedure is as follows:
• Creation of the necessary definition files:
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• Setting of the write right for the definition files to the value required for redefinition:
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• For access to protected elements from cycles, the execution and write rights for cycle
directories _N_CST_DIR, _N_CMA_DIR, and _N_CST_DIR have to be modified.
Execution rights
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Write rights
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The execution right has to be set to at least the same protection level as the highest
protection level of the element used.
The write right must be set to at least the same protection level as the execution right.
• The write rights of the local HMI cycle directories must be set to the same protection level
as the local NC cycle directories.
References
/BAD/ Operating Manual, HMI Advanced,
Chapter: Services operating area > Data administration > Modify properties
Subprogram calls in ACCESS files
To structure access protection further, subprograms (SPF or MPF identifier) can be called in
ACCESS files. The subprograms inherit the execution rights of the calling ACCESS file.
Note
Only access rights can be redefined in the ACCESS files. All other attributes have to
continue to be programmed/redefined in the corresponding definition files.
See also
General information about variables General information about variables [Page 17]
Job planning
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
_N_DEF_DIR/_N_SACCESS_DEF
_N_DEF_DIR/_N_MACCESS_DEF
_N_DEF_DIR/_N_UACCESS_DEF
MD11170 $MN_ACCESS_WRITE_SACCESS
MD11171 $MN_ACCESS_WRITE_MACCESS
MD11172 $MN_ACCESS_WRITE_UACCESS
MD11160 $MN_ACCESS_EXEC_CST
MD11161 $MN_ACCESS_EXEC_CMA
MD11162 $MN_ACCESS_EXEC_CUS
MD11165 $MN_ACCESS_WRITE_CST
MD11166 $MN_ACCESS_WRITE_CMA
MD11167 MN_ACCESS_WRITE_CUS
Flexible NC programming
1.1 Variables
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