Siemens Sinumerik 840D sl Function Manual page 385

10/15
20700
MD number
Default value TRUE
Change becomes effective after: Reset
Data type: BOOLEAN
Meaning:
corresponds with ...
Additional references
28251
MD number
Default value 0
Change becomes effective after: POWER ON
Data type: DWORD
Meaning:
corresponds with ...
Additional references
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
$MC_REFP_NC_START_LOCK
NC start disable without reference point
Min. input limit: - -
Protection level: 7/2
0:
The NC/PLC interface signal (NC start) to start part programs or part program blocks (MDA
and save/overwrite) is effective, even if one or all axes of the channel have still not been
referenced.
In order that the still reach the correct position after the NC start, the workpiece coordinate
system (WCS) must be set to a correct value using other methods (scratching, automatic
work offset determination, etc.).
1:
Those axes, that were specified (in the application) as requiring to be referenced in the
axis- -specific MD20700 $MA_REFP_CYCLE_NR (value > - -1), must be referenced before
an NC start is permitted.
$MC_MM_NUM_SAFE_SYNC_ELEMENTS
Number of elements for expressions in safety synchronized actions
Min. input limit: 0
Protection level: 7/2
The expressions of motion synchronizing actions are saved in storage elements in the
control system. A motion synchronizing action requires a minimum of 4 elements.
The assignments are as follows:
each operand in the condition: 1 element
each action: >= 1 element
each assignment: 2 elements
each additional operand in complex expressions: 1 element
See also: MD28250 $MC_MM_NUM_SYNC_ELEMENTS
8.1 Machine data for SINUMERIK 840D sl
Max. input limit: - -
Max. input limit: 32000
Data Description
Unit: - -
Unit: - -
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