## Setting Up Relative Measure (RMEAS)

The Insert | Parameter Change | Auto Relative Measure menu option sets the relative measurement mode for auto features. When you select this menu option, PC-DMIS inserts an RMEAS command into the Edit window and by default sets it to use the DEFAULT (I,J,K, Z) mode. You can then change it to the LEGACY (I,J,K, X,Y,Z) mode if desired:

- Default (I,J,K, Z) RMEAS Mode (previously called Absolute Mode) - uses the RMEAS feature’s measured position and vector, applying any positional offsets along that vector.

- Legacy (I,J,K, X,Y,Z) RMEAS Mode (previously called Normal Mode) - uses the deviation of the RMEAS feature’s position and orientation.

Note: RMEAS is mostly used for adjusting feature orientation. Default (I,J,K, Z) mode should be selected in these cases. Legacy (I,J,K, X,Y,Z) mode should only be used in rare instances where adjustments in both orientation and position are needed.
Before using either RMEAS mode, ensure that the RMEAS_modeDefaultForPlane registry entry is set to TRUE in the USER_Option section of the PC-DMIS Settings Editor. If you are using a dual arm machine, remember to also check the same setting in the USER_Option_CMM2 section. See the "Modifying Registry Entries" section for more information.

You should insert the RMEAS command into the part program before using the Relative Measurement area in the Auto Feature dialog box. For more information, see "Relative Measurement area".

More:

Default (I,J,K, Z) RMEAS Mode

Math Process of the Default (I,J,K, Z) RMEAS Mode:

Legacy (I,J,K, X,Y,Z) RMEAS Mode

Math Process of the Legacy (I,J,K, X,Y,Z) RMEAS mode