Siemens SINUMERIK 840Di Function Manual page 677

Note
The previous setting option in machine data MD20110 $MC_RESET_MODE_MASK
is omitted!
The corresponding bits of this MD are tagged as reserved. Write operations involving these
bits are automatically redirected to the corresponding array elements of
MD20150 $MC_GCODE_RESET_MODE and Alarm 4502 is output.
When MD20110 $MC_RESET_MODE_MASK is read, the information from the relevant field
arrays of MD20150 $MC_GCODE_RESET_MASK are read again and written to
MD20110 $MC_RESET_MODE_MASK.
The mode of functioning of MD20112 $MC_START_MODE_MASK remains the same as in
SW5.
Part program start
The initial setting of the control system at part program start, e.g., G codes (especially active
plane and active settable zero offset), active tool length compensation, transformation, and
axis coupling, is determined according to the following table.
Application
If a bit is set in MD20112 $MC_START_MODE_MASK, the reset action of the relevant
function can be delayed until the start of the part program.
Table 2-16 Effect of MD20112 $MC_START_MODE_MASK Bits 1 to 7
Bit 1 = 1 Bit 2 = 1
No D, T, M Reserved
output on tool
selection;
with active tool
management
irrelevant
Mode Group, Channel, Program Operation, Reset Response (K1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2.10 System settings for power-up, RESET/part-program end and part-program start
Bit 3 = 1 Bit 4 = 1
Reserved Plane
according to
MD20150
$MC_GCODE
_RESET_
VALUES
Bit 5 = 1 Bit 6 = 1
Frame WZK according to
according to MD20120
MD20150 $MC_TOOL_RESET_VALUE,
$MC_GCODE MD20121
_RESET_ $MC_TOOL_PRESEL_
VALUES RESET_
VALUE, and
MD20130 $MC_CUTTING_
EDGE_RESET_VALUE;
Output of D, T, M to PLC,
depending on bit 1
Detailed Description
Bit 7 = 1
Trans-
formation
according to
MD20140
$MC_TRAFO_
RESET_
VALUE
2-141