HEIDENHAIN iTNC 530 (34049x-08) Cycle programming - Manual (Page 358)

358 Touch probe cycles: automatic datum setting
15.1
Fundamentals
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. At the same time, the TNC saves the datum set
in the display by the cycle in line 0 of the preset table.
 Q305 not equal to 0, Q303 = –1
 Q305 not equal to 0, Q303 = 0
The TNC writes the calculated datum in the active datum table. The
reference system is the active workpiece coordinate system. The
value of parameter Q305 determines the datum number. Activate
the datum with Cycle 7 in the part program.
 Q305 not equal to 0, Q303 = 1
The TNC writes the calculated datum in the preset table. The
reference system is the machine coordinate system (REF
coordinates). The value of parameter Q305 determines the preset
number. Activate the 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 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 specifically define the measured-value transfer
with parameter Q303 when defining the cycle.
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.