#### Iterative Alignment Command Format

The Edit window command line for this option reads:
ALIGNMENT/ITERATE,'feat_id'
, PNT TARGET RAD=n, START LABEL=label, FIXTURE TOL = n, ERROR LABEL=label
MEAS ALL FEAT=NO/ALWAYS/ONCE,
MAX ITERATIONS = n
LEVEL AXIS =axis, ROTATE AXIS=axis, ORIGIN AXIS=axis
LEVEL = id, id, id,…
ROTATE = id, id,…
ORIGIN = id,…

Changeable field: "feat_id"
These are the features that will be used to do the iterative alignment . Currently, at least three different features must be selected for the calibration. Features that can establish a datum axis in more than one direction (such as a circle or a slot) can be specified in more than one datum axis. For example, a circle could be used both to establish the level axis as well as the rotation axis. Typically, measured points (including vector and surface points) can only be used to establish one datum axis.

PNT TARGET RAD = This option specifies the target radius value for the measured point features used in the alignment. See "Point Target Radius" for complete information.

START LABEL = PC-DMIS starts at the label specified here when remeasuring alignment features. You must set MEAS ALL FEAT to ALWAYS for this to work. See "Start Label" for complete information.

FIXTURE TOL = This is the fitting tolerance that PC-DMIS uses to compare measured alignment features to their theoretical values. See "Fixture Tolerance" for complete information.

ERROR LABEL = PC-DMIS goes to the label specified here when the fixture tolerance level is exceeded. If you don't define a label, PC-DMIS will generate an error message showing the amount of error on each of the input features. See "Error Label" for complete information.

LEVEL AXIS = PC-DMIS uses the LEVEL input features to set the orientation and origin of the axis specified here. See "Level" for complete information.

ROTATE AXIS = PC-DMIS uses the ROTATE input features to set the rotation of the axis specified here about the level axis. The origin of the axis specified here is also set by PC-DMIS using the ROTATE input features. See "Rotate" for complete information.

ORIGIN AXIS = PC-DMIS uses the ORIGIN input features to set the origin of the axis specified here. See "Origin" for complete information.

MEASURE ALL FEATURES = This option determines how PC-DMIS proceeds by either re-measuring the input features or automatically re-executing a portion of the part program in DCC mode. There are three possible settings for this option. They are:

· NO. See "Point Target Radius" for complete information.

· ONCE. See "Meas All Once" for complete information.

· ALWAYS. See "Meas All Always" for complete information.

MAX ITERATIONS = This option determines the maximum number of iterations that PC-DMIS will perform for this iterative alignment. PC-DMIS only uses this value if the Meas All Always check box is selected.