Siemens Sinumerik 840D sl Programming Manual page 56

Motion commands
3.4 Tool offset functions
Figure 3-11
Settings
● The machine data $MC_TOOL_CORR_MOVE_MODE determines whether the tool length
● The cutter radius compensation can also be called for an operation with tool length
56
Tool position offset
compensation is to be undertaken with the selection of the tool offset or only during the
programming of an axis motion.
$MC_CUTTING_EDGE_DEFAULT = 0 defines that initially no tool length compensation is
active during a tool change.
$MC_AUXFU_T_SYNC_TYPE defines whether the output of the T function to the PLC
takes place during or after the traversing movement.
$MC_RESET_MODE_MASK, Bit 6, can be used to define that the currently active tool
length compensation will remain active even after a RESET.
compensation.
Programming Manual, 06/09, 6FC5398-7BP10-1BA0
ISO Milling