HEIDENHAIN TNC 620 (34056x-04) Cycle programming - Manual (Page 354)

Touch Probe Cycles: Automatic Datum Setting
15.15 Example: Datum setting on top surface of workpiece and in center
of a bolt hole circle
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TNC 620 | User's Manual Cycle Programming | 5/2013
Q303=+1 ;MEAS. VALUE TRANSFER In the preset table PRESET.PR, save the calculated datum
referenced to the machine-based coordinate system (REF
system)
Q381=0 ;PROBE IN TS AXIS
Do not set a datum in the touch probe axis
Q382=+0 ;1ST CO. FOR TS AXIS
No function
Q383=+0 ;2ND CO. FOR TS AXIS
No function
Q384=+0 ;3RD CO. FOR TS AXIS
No function
Q333=+0 ;DATUM
No function
Q320=0 ;SET-UP CLEARANCE
Safety clearance in addition to SET_UP column
4 CYCL DEF 247 DATUM SETTING
Activate new preset with Cycle 247
Q339=1 ;DATUM NUMBER
6 CALL PGM 35KLZ Call part program
7 END PGM CYC416 MM