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2 a u to matic d at u m set ting – HEIDENHAIN TNC 426B (280 472) Touch Probe Cycles User Manual

Page 66

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54

3 Touch Probe Cycles for Automatic Workpiece Inspection

3.2 A

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U

U

U

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Datum number in table

Q305: Enter the datum

number in the table in which the TNC is to save the
coordinates of the corner. If you enter Q305=0, the
TNC automatically sets the display so that the new
datum is on the corner.

U

U

U

U

New datum for reference axis

Q331 (absolute):

coordinate in the reference axis at which the TNC
should set the corner. Basic setting = 0

U

U

U

U

New datum for minor axis

Q332 (absolute):

coordinate in the minor axis at which the TNC should
set the corner. Basic setting = 0

Example: NC blocks

5 TCH PROBE 414 DATUM OUTSIDE CORNER

Q263=+37 ;1ST POINT 1ST AXIS

Q264=+7 ;1ST POINT 2ND AXIS

Q326=50 ;SPACING IN 1ST AXIS

Q296=+95 ;3RD POINT 1ST AXIS

Q297=+25 ;3RD POINT 2ND AXIS

Q327=45 ;SPACING IN 2ND AXIS

Q261=-5 ;MEASURING HEIGHT

Q320=0 ;SET-UP CLEARANCE

Q260=+20 ;CLEARANCE HEIGHT

Q301=0 ;TRAVERSE TO CLEAR HEIGHT

Q304=0 ;BASIC ROTATION

Q305=7 ;NO. IN TABLE

Q331=+0 ;DATUM

Q332=+0 ;DATUM