HEIDENHAIN TNC 620 User Manual page 633

Miscellaneous functions
M Effect
M0 Program STOP/Spindle STOP/Coolant OFF
M1 Optional program run STOP/Spindle STOP/Coolant OFF
M2 Stop program/Spindle STOP/Coolant OFF/ CLEAR status display
(depending on machine parameter)/Return jump to block 1
M3 Spindle ON clockwise
M4 Spindle ON counterclockwise
M5 Spindle STOP
M6 Tool change/STOP program run (depending on machine parameter)/
Spindle STOP
M8 Coolant ON
M9 Coolant OFF
M13 Spindle ON clockwise/Coolant ON
M14 Spindle ON counterclockwise/Coolant on
M30 Same function as M2
M89 Vacant miscellaneous function
cycle call, modally effective (depending on machine parameter)
M91 Within the positioning block: Coordinates are referenced to machine
datum
M92 Within the positioning block: Coordinates are referenced to a position
defined by machine manufacturer, e.g. tool change position
M94 Reduce the rotary axis display to a value below 360°
M97 Machine small contour steps
M98 Machine open contours completely
M99 Blockwise cycle call
M101 Automatic tool change with replacement tool if maximum tool life has
expired
M102 Reset M101
M107 Suppress error message for replacement tools with oversize
M108 Reset M107
M109 Constant contouring speed at cutting edge (feed rate increase and
reduction)
M110 Constant contouring speed at cutting edge (only feed rate reduction)
M111 Reset M109/M110
M116 Feed rate in mm/min on rotary axes
M117 Reset M116
M118 Superimpose handwheel positioning during program run
M120 Pre-calculate the radius-compensated contour (LOOK AHEAD)
M126 Shorter-path traverse of rotary axes
M127 Reset M126
M128 Maintaining the position of the tool tip when positioning with tilted axes
(TCPM)
M129 Reset M128
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015
Effective at block
or
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