Heidenhain TNC 320 (340 55x-03) Touch Probe Cycles User Manual download pdf (Page 64)

3.2 Presetting automatically

Saving the calculated datum

In all cycles for datum setting you can use the input parameters Q303

and Q305 to define how the TNC is to save the calculated datum:

 Q305 = 0, Q303 = any value

The TNC sets the calculated datum in the display. The new datum is

active immediately.

 Q305 not equal to 0, Q303 = -1

 Q305 not equal to 0, Q303 = 0

The TNC writes the calculated reference point in the active datum

table. The reference system is the active workpiece coordinate

system. The value of parameter Q305 determines the datum

number. Activate datum with Cycle 7 in the part program.

 Q305 not equal to 0, Q303 = 1

The TNC writes the calculated reference point in the preset table.

The reference system is the machine coordinate system (REF

coordinates). The value of parameter Q305 determines the preset

number. Activate preset with Cycle 247 in the part program.

Measurement results in Q parameters

The TNC saves the measurement results of the respective touch

probe cycle in the globally effective Q parameters Q150 to Q160. You

can use these parameters in your program. Note the table of result

parameters that are listed with every cycle description.

This combination can only occur if you

 read in programs containing Cycles 410 to 418 created

on a TNC 4xx

 read in programs containing Cycles 410 to 418 created

with an older software version on an iTNC 530

 did not yourself define the measured-value transfer with

parameter Q303 in the cycle definition

In these cases the TNC outputs an error message, since

the complete handling of REF-referenced datum tables

has changed. You must define a measured-value transfer

yourself with parameter Q303.

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Heidenhain TNC 320 (340 55x-03) Touch Probe Cycles User Manual Page 64