HEIDENHAIN TNC 620 User Manual page 586

16
Test Run and Program Run
16.5 Program run
Returning to the contour
With the RESTORE POSITION function, the TNC moves the tool to
the workpiece contour in the following situations:
Return to the contour after the machine axes were moved
during a program interruption that was not performed with the
INTERNAL STOP function.
Return to the contour with a block scan with RESTORE POS AT
N, for example after an interruption with INTERNAL STOP
Depending on the machine, if the position of an axis has
changed after the control loop has been opened during a
program interruption
Procedure
To move to the contour, proceed as follows:
Press the RESTORE POSITION soft key
Restore the machine status, if required
Approach the axes in the sequence shown by the control:
Press the NC START key
Approach the axes according to individually selected sequence:
Press the SELECT AXIS soft key
Press the axis soft key of the first axis
Press the NC START key
Press the axis soft key of the second axis
Press the NC START key
Repeat the process for all axes
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HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016