M-Series Operator’s Manual 4/9/15
Parameter 121 – Grid digitize prediction minimum Z pullback
This parameter specifies the minimum distance the Z-axis will move upward when pulling back from a surface. The
digitizing function attempts to predict the slope of a part surface because time is saved when the Z-axis does not have
to travel upward to the starting Z depth for every digitized point. When probe contact is made traversing in the XY
plane, this parameter specifies the minimum distance the Z-axis moves upward before attempting another XY plane
move. Smaller values are better when the surface being digitized has smooth curves. Larger values are better for
surfaces that have steep walls. It is recommended that this parameter should not be changed from its default value
without consulting a qualified technician.
Parameter 122 – Grid digitizing deadband move distance
This parameter specifies a deadband distance used for internal calculations when doing a clearance move. It is
recommended that this parameter should not be changed from its default value.
Parameter 123 – Radial Clearance Move
This parameter only applies to radial digitizing and determines what type of positioning move the digitizing probe will
make should it encounter an unexpected probe contact with the surface of the part during Radial Digitizing.
Unexpected probe contact is defined as probe contact occurring while the probe is traversing towards the user defined
center point.
With Parameter 123 set to 0: When the probe encounters an unexpected probe contact, the digitizing program stops
data collection. The control then prompts the operator to jog the probe to a clear position. This can be any place inside
the digitizing radius and above the part, that the probe stylus has a clear path to the defined center position. To restart
data collection press Cycle Start. The probe moves in the XY plane from the position the operator placed it at, to the
center position defined in the radial setup menu. After reaching the center position, the probe will feed down to the Z-
axis position it was at when the data collection was interrupted. The digitizing run will resume with the probe
approaching from the defined center position.
With Parameter 123 set to 1: When the probe encounters an unexpected probe contact, it will automatically move (with
probe detection turned off) to the maximum Z height, then moves the X and Y-axis to the defined center position. The
probe will then move to the Z position it was at when the unexpected contact occurred. It will then move from the
defined center position, towards the measurement position it was trying to approach when the unexpected probe
contact occurred and continue digitizing.
With Parameter 123 set to 2: When the probe encounters an unexpected probe contact, it will automatically move back
to the defined center position (with probe detection turned off), at its present Z height. It will then move from the
defined center position, towards the measurement position it was trying to approach when the unexpected probe
contact occurred and continue digitizing.
NOTICE
Settings 1 and 2 should only be used with extreme caution because probe detection
during some positioning moves is turned off, and damage to the probe or work piece
could occur!
Parameter 130, 131 – 3
rd
/ 4
th
axis on/off selection
These parameters control the display of the 3
rd
and 4
th
axes, respectively. The tens digit of the parameter value
specifies the label of the affected axis when it is enabled, with values 1-9 corresponding to axis labels ABCUVWXYZ.
The ones digit specifies the label of the axis when it is disabled, with 0.0 meaning the axis is not switchable, 1.0
meaning it turns off (N), a 2.0 meaning manual (M), and a 3.0 meaning 2-axis with manual Z (@). Parameter 130 also
supports additional modes depending upon the value of the hundreds digit. See the chart below for valid values for the
Hundred’s digit of Parameter 130. Note that Parameter 131 does not support the Hundred’s digit. When P130/P131 is
configured for axis switching, the Setup menu displays function keys F5/F6 to switch the axes.
Example 1:
A value of 192 in parameter 130 will toggle the 3rd axis between Z and M and power off all axes. The 1 sets bit one to
power all axes off, the 9 enables the 3
rd
axis to “Z”, and the 2 changes the axis label to “M” once toggled with the F5
key in the Setup menu.
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