# Versa Probe Usage (pg3)

### {edge} LENGTH

This is the distance the probe will move at the rapid rate to the position where it will begin a search. If measuring a corner, it will move EDGE LENGTH units away from the corner, then move away from the workpiece by XY CLEARANCE, lower by Z CLEARANCE and begin the initial search. If measuring an inner circle, then EDGE LENGTH should be set to the approximate radius of the circle. Note: NOT the diameter.

### XY / Z TRAVEL (maximum)

The maximum distance that the probe will travel during the initial search. If the search distance is too short, you will receive a message like "G38 finished without making contact". For safety reasons, it is recommended to set this parameter to 3-4 mm more than probe stylus diameter. Z travel used for straight down probing.

### LATCH RTN

The distance the probe is retracted after making initial contact with the workpiece. This should be a short distance because the second approach will be at a slow speed, but large enough for the probe to break contact and bring it to the search ready state. If the Latch Rtn distance too large, you will end up spending a lot of time waiting for the search to complete. Recommendation: 1-2 mm

PROBE HT

The height of the tool sensor from the machine table surface. This value is used to calculate the Z zero height for the current work coordinate system when using the probe with a tool setter sensor.

### BLOCK HT

The height of the top of the workpiece from the machine table surface. This value is used to calculate the Z zero height for the current work coordinate system when using the probe with a tool setter sensor.

MOTION (state)

This displays the current state of the motion controller.