Retraction From The Contour In The Tool-Axis Direction: M140 - HEIDENHAIN TNC 620 User Manual

Miscellaneous Functions | Miscellaneous functions for path behavior
Retraction from the contour in the tool-axis direction:
M140
Standard behavior
In the Program Run Single Block and Program Run Full Sequence
operating modes, the control moves the tool as defined in the
machining program.
Behavior with M140
With M140 MB (move back), you can retract the tool from the
contour by a programmable distance in the direction of the tool
axis.
Input
If you enter M140 in a positioning block, the control continues
the dialog and prompts you for the path the tool should use for
retracting from the contour. Enter the desired path that the tool
should follow when retracting from the contour, or press the
MB MAX soft key to move to the limit of the traverse range.
In addition, you can program the feed rate at which the tool
traverses the entered path. If you do not enter a feed rate, the
control moves the tool along the entered path at rapid traverse.
Effect
M140 is effective only in the NC block in which itis programmed.
M140 becomes effective at the start of the block.
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017
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