2 before you start working with touch probe cycles, Maximum traverse to touch point: mp6130, Safety clearance to touch point: mp6140 – HEIDENHAIN TNC 426B (280 472) Touch Probe Cycles User Manual
Page 17: Multiple measurement: mp6170
HEIDENHAIN TNC 426, TNC 430
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1.2 Before You Start Working with
Touch Probe Cycles!
To make it possible to cover the widest possible range of applications,
machine parameters enable you to determine the behavior common
to all touch probe cycles:
Maximum traverse to touch point: MP6130
If the stylus is not deflected within the path defined in MP6130, the
TNC outputs an error message.
Safety clearance to touch point: MP6140
In MP6140 you define how far from the defined (or calculated) touch
point the TNC is to pre-position the touch probe. The smaller the value
you enter, the more exactly must you define the touch point position.
In many touch probe cycles you can also define a setup clearance in
addition that is added to machine parameter 6140.
Orient the infrared touch probe to the
programmed probe direction: MP6165 (as
of 280 476-10)
To increase measuring accuracy, you can use MP 6165 = 1 to have an
infrared touch probe oriented in the programmed probe direction
before every probe process. In this way the stylus is always deflected
in the same direction.
Multiple measurement: MP6170
To increase measuring certainty, the TNC can run each probing
process up to three times in sequence. If the measured position
values differ too greatly, the TNC outputs an error message (the limit
value is defined in MP6171). With multiple measurement it is possible
to detect random errors, e.g., from contamination.
If the measured values lie within the confidence interval, the TNC
saves the mean value of the measured positions.
Confidence interval for multiple measurement:
MP6171
In MP6171 you store the value by which the results may differ when
you make multiple measurements. If the difference in the measured
values exceeds the value in MP6171, the TNC outputs an error
message.