6.18 Miscellaneous Functions For Path Behavior; Superimposing Handwheel Positioning During Program Run: M118 (Option 21) - HEIDENHAIN TNC 620 User Manual

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6.18 Miscellaneous functions for path behavior

Superimposing handwheel positioning during program
run: M118 (option 21)
Standard behavior
Refer to your machine manual.
Your machine tool builder must have prepared the control
for this function.
In the Program Run operating modes, the control moves the tool as
defined in the NC program.
Behavior with M118
M118 permits manual corrections by handwheel during the program
run. For this purpose, you program M118 and enter an axis-specific
value (linear or rotary axis).
Input
If you enter M118 in a positioning block, the control continues the
dialog for this block by prompting you for the axis-specific values.
Use the orange axis keys or the alphabetic keyboard for entering the
coordinates.
Effect
To cancel handwheel positioning, program M118 once again without
coordinate input or end the NC program with M30 / M2.
If the program aborts, handwheel positioning will also be
canceled.
M118 becomes effective at the start of the block.
Example
You want to be able to use the handwheel during program run to
move the tool in the working plane X/Y by ±1 mm and in the rotary
axis B by ±5° from the programmed value:
L X+0 Y+38.5 RL F125 M118 X1 Y1 B5
When programmed in an NC program, M118 is always
effective in the machine coordinate system.
The POS HR tab of the additional status display shows
the Max. val. defined in M118.
The function Handwheel superimposed is also effective
in the Positioning w/ Manual Data Input operating
mode!
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Testing and running | Miscellaneous functions for path behavior
HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 01/2022