### Using Feature Based Measurement

PC-DMIS's Feature Based Measurement (FBM) functionality is only available if your portlock is programmed with the Feature Based Measurement module.

Because the Feature Based Measurement (FBM) functionality ties directly into the GROUP command, you now have the ability to apply "scope" to move-points, probe changes, tip changes, and any other non-measurement type motion of the machine. This gives you greater control over non-measurement motion in your part program.

Enabling Feature Based Measurement

1. Add desired commands to a group. See "Inserting Groups".

2. View the group inside the Edit window's Command mode. You will see that the FEATURE BASED MEASUREMENT/ ENABLED = NO statement appears on the second line of the GROUP command block. By default, this statement is set to NO.

3. Ensure that FEATURE BASED MEASUREMENT/ ENABLED is set to YES.

Yellow Highlights Indicating the FBM Statements as part of the GROUP Commands

Understanding the Rules of Feature Based Measurement

- Any non-measurement type motion command that does not exist within a group has a "global scope". This kind of motion is always executed.

- If a GROUP command has FBM set to NO, all commands within that group will execute.

- If a GROUP command has FBM set to YES, all non-measurement type motion commands will only execute if there is a measurement motion command within that group.

- Nested groups follow the above rules. If an inner group generates measurement motion, its outer group will also execute as a result. For example, suppose you have two groups, GROUP A and GROUP B with GROUP B nested inside GROUP A. If FBM is set to YES for both GROUP commands, but only Group B generates measurement motion, GROUP A will also execute.