Parameterizable Protection Levels - Siemens SINUMERIK 828D Function Manual

A2: Various NC/PLC interface signals and functions
1.3 Functions
Default settings via the PLC user program
The keyswitch switch positions are transferred to the NC/PLC interface via the basic PLC program. The
corresponding interface signals can be modified via the PLC user program. In this context, from the point of view
of the NC, only one switch position should ever be active, i.e,. the corresponding interface signal set to 1. If, from
the point of view of the NC, a number of switch positions are active at the same time, switch position 3, i.e., the
keyswitch position with the least restricted access rights, will be activated internally by the NC.
1.3.5.4

Parameterizable protection levels

Parameterizable protection level
The parameter level can be freely parameterized for a variety of functions and data areas. The protection level is
set via operator-panel machine data, designated as follows: $MM_USER_CLASS_<
Examples:
$MM_USER_CLASS_READ_TOA
$MM_USER_CLASS_WRITE_TOA
$MM_USER_CLASS_READ_PROGRAM
$MM_USER_CLASS_WRITE_PROGRAM
Default values
On delivery or following standard commissioning, with very few exceptions, the default value for the protection
level will be set to 7, i.e. the lowest protection level.
66
Read tool offsets
Write tool offsets
Read part programs
Write/edit part programs
Function_DataArea
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
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Basic Functions