Siemens SINUMERIK 828D Turning, Руководство по эксплуатации функций

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A2: Various NC/PLC interface signals and functions
1.3 Functions
Basic Functions
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Function Manual, 09/2011, 6FC5397-0BP40-2BA0
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_<
Function_DataArea
>
Examples:
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.
$MM_USER_CLASS_READ_TOA Read tool offsets
$MM_USER_CLASS_WRITE_TOA Write tool offsets
$MM_USER_CLASS_READ_PROGRAM Read part programs
$MM_USER_CLASS_WRITE_PROGRAM Write/edit part programs