#### Positive Reporting

The check boxes related to the Positive Reporting area control the reporting of features to the negative side of the origin that would normally have negative values to always be printed with positive values.

- The X, Y, and Z check boxes determine on which axis (or axes) PC-DMIS will display positive numbers.

- The All Data option tells PC-DMIS to display the measured and nominal values of the selected axis (or axes) as positive numbers.

- The Deviations Only option tells PC-DMIS to display only the deviations of the selected axis (or axes) as positive numbers.

When these check boxes are selected, a POSITIVEREPORTING command is inserted into the part program at the current cursor position. This command has the following format in the Edit window:

POSITIVEREPORTING/ a, b, c, TOG1

Where:

a = X when the X check box is selected, or blank if the X check box is cleared.

b = Y when the Y check box is selected, or blank if the Y check box is cleared.

c = Z when the Z check box is selected, or blank if the Z check box is cleared.

TOG1 = ALLDATA or DEVONLY depending on whether you selected the All Data or Deviations Only option.

The X, Y, and Z direction may each have positive reporting turned on in any combination of the three. Multiple POSITIVEREPORTING commands may be used within the same part program, and any dimensions that are in the part program are displayed using the POSITIVEREPORTING command that precedes the dimensions. If no POSITIVEREPORTING command exists in the part program, all dimensions are reported with the options turned OFF in the X, Y, and Z directions.

The following diagram demonstrates how the tolerances are also affected by the positive reporting options:

Positive Reporting affecting tolerances | A) 0.3 +tol in X B) 0.1 -tol in X C) 0.2 deviation in X D) Point 1 E) Point 2

F) 1.0 nominal

Purpose of Positive Reporting

Positive reporting allows you to report features in a symmetric manner, so that, regardless of which side of the origin the feature exists, deviations:

- away from the origin are considered positive.

- toward the origin are considered negative.

Thus, in the diagram above, both Point1 and Point2 will display positive deviations when positive reporting in the X axis. This also means, however, that:

- plus tolerances are applied away from the origin.

- minus tolerances are applied toward the origin.