Measure Dimensions by Features

Description

This Step is used to perform dimensional measurements from a feature point to a reference feature (reference point, reference line, or reference plane). It measures the distance between a point and a geometric feature such as a point or a plane.

step illustration

Measures the distance from feature points to the reference plane

Workflow

The process of configuring this Step is shown below.

measure dimensions by features
  1. Configure the input. Connect the ports manually or select the input(s) under Input in the parameter configuration panel.

  2. Set the parameters according to the actual requirements.

  3. Select the desired output(s) under Output. For an expandable output item, click ▶ and configure the Min and Max values of the acceptable range.

  4. Run the Step and view output.

Parameter Description

Parameter Description

Measurement Mode

You can select Surface mode or Profile mode. For the difference in measurement dimensions under different modes, please refer to Output Description.

Output Absolute Length

When this is selected, the absolute value of the width (along the X-axis) between features will be output. Otherwise, a signed number will be output.

Output Absolute Width

When this is selected, the absolute value of the length (along the Y-axis) between features will be output. Otherwise, a signed number will be output.

Output Absolute Height

When this is selected, the absolute value of the height (along the Z-axis) between features will be output. Otherwise, a signed number will be output.

Output Description

Select the output item(s) to add the output port(s) to the Step, and the corresponding data will be output after the Step is run. You can select the output according to the actual measurement requirements.

If you select an expandable output item, you must expand it by clicking ▶, and then set the Min and Max values to determine the acceptable range. If the output value falls within the qualified range, the measurement is judged as passing (OK), or else it is judged as failing (NG).

Output Item Description

Width

  • Point–point: The difference on the X-axis between the points.

  • Point–line: The difference on the X-axis between the point and a point on the line. The two points have the same Y coordinate.

  • Point–plane: The difference on the X-axis between the point and a point on the plane with the same Y and Z coordinates as the first point.

Length

  • Point–point: The difference on the Y-axis between the points.

  • Point–line: The difference on the Y-axis between the point and a point on the line. The two points have the same X coordinate.

  • Point–plane: The difference on the Y-axis between the point and a point on the plane with the same X and Z coordinates as the first point.

Height

  • Point–point: The difference on the Z-axis between the points.

  • Point–line: The difference on the Z-axis between the point and a point on the line. The point on the line is the one closest to the first point.

  • Point–plane: The difference on the Z-axis between the point and a point on the plane with the same X and Y coordinates as the first point.

Distance

  • Point–point: The Euclidean distance between two points.

  • Point–line: The shortest distance from the feature point to the reference line, namely the Euclidean distance.

  • Point–plane: The shortest distance from the feature point to the reference plane, namely the Euclidean distance.

Plane Distance

  • Point–point: The distance between the two points’ projections onto the XOY plane.

  • Point–line: The distance between the projections of the point and the reference line onto the XOY plane.

  • Point–plane: The distance between the projections of the point and the reference plane onto the XOY plane.

Troubleshooting

See Error Code List for common error messages and solutions.

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