Siemens SINUMERIK 808D Parameter Manual page 133

Bit 4 = 0:
The current setting for G code "current plane" is retained.
Bit 4 = 1:
Initial setting for G code "current plane" according to MD20150 $MC_GCODE_RESET_VALUES
Bit 5 = 0:
The current setting for G code "settable work offset" is retained.
Bit 5 = 1:
Initial setting for G code "settable work offset" according to MD20150
$MC_GCODE_RESET_VALUES
Bit 6 = 0:
The current setting for active tool length offset is retained.
If tool or magazine management is active, the tool currently on the active toolholder
(spindle) is always selected.
If the tool that is currently on the spindle is disabled, it is automatically replaced
by a suitable replacement tool.
If such a replacement tool does not exist, an alarm is output.
Bit 6 = 1:
Initial setting for active tool length offset according to MD20120
$MC_TOOL_RESET_VALUE, MD20130 $MC_CUTTING_EDGE_RESET_VALUE, MD20123
$MC_USEKT_RESET_VALUE, and MD20132 $MC_SUMCORR_RESET_VALUE.
If MD22550 $MC_TOOL_CHANGE_MODE = 1, the tool selected via MD20121
$MC_TOOL_PRESEL_RESET_VALUE is preselected in addition.
If tool or magazine management is active, MD20120 $MC_TOOL_RESET_NAME is used instead
of MD20122 $MC_TOOL_RESET_VALUE.
Bit 7 = 0:
The current setting for the active transformation is retained.
Bit 7 = 1:
Initial setting for active transformation after reset/end of part program according to
MD20140 $MC_TRAFO_RESET_VALUE
Bit 8 = 0:
Coupled-motion axis groupings remain active.
Bit 8 = 1:
Coupled-motion axis groupings are deactivated.
Bit 9 = 0:
Tangential correction remains active.
Bit 9 = 1:
Tangential correction is deactivated.
Bit 10 = 0:
Non-configured synchronous spindle coupling remains active.
Bit 10 = 1:
Non-configured synchronous spindle coupling is deactivated.
Bit 11 :
Bit 12 = 0:
A changed geometry axis assignment remains active when the part program starts.
Bit 12 = 1:
If machine data MD20118 $MC_GEOAX_CHANGE_RESET is set, a changed geometry axis
assignment is deleted when the part program starts.
Bit 13 = 0:
Master value couplings remain active.
Bit 13 = 1:
Master value couplings are deactivated.
Parameter Manual
List Manual, 01/2017
Reserved (revolutional feedrate)
Machine data
3.3 Channel-specific machine data
133