To set the relative measurement mode for auto features, select Insert | Parameter Change | Auto Relative Measure. When you select this menu option, PC-DMIS inserts an RMEAS command into the Edit window. By default, PC-DMIS sets the mode to use the Default (I,J,K, T) mode. This mode (previously called Absolute mode) uses the RMEAS feature’s measured position and vector. It applies any positional offsets along that vector. For more information about this mode, see the "Default (I,J,K, T) RMEAS Mode" topic.
You can change the mode to the Legacy (I,J,K, X,Y,Z) mode if desired. This mode (previously called Normal mode) uses the deviation of the RMEAS feature’s position and orientation. To change the mode, select Insert | Parameter Change | Auto Relative Measure. For more information about this mode, see the "Legacy (I,J,K, X,Y,Z) RMEAS Mode" topic.
The Insert | Parameter Change | Auto Relative Measure menu option toggles between Default (I,J,K, T) mode and Legacy (I,J,K, X,Y,Z) mode.
Before you use either RMEAS mode, ensure that the RMEAS_modeDefaultForPlane registry entry is correctly set. For details, see the "RMEAS_modeDefaultForPlane" topic in the "USER_AutoFeatures" section of the PC-DMIS Settings Editor documentation.
Also, if you are using a dual-arm machine, remember to also check the same setting in the USER_AutoFeatures_CMM2 section.
For information on how to use PC-DMIS Settings Editor, see the "Modifying Registry Entries" appendix.
You should insert the RMEAS command into the measurement routine before you use the Relative to option in the Advanced measurement options area in the Auto Feature dialog box. If no RMEAS command appears in the measurement routine, PC-DMIS uses the default RMEAS algorithm to compute the RMEAS. For more information, see the "Relative To" topic.
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Math Process of the Default (I,J,K, T) RMEAS Mode