## Performing a Leapfrog Operation

Important: PC-DMIS does not support Leapfrog and Bundle Alignment commands used in the same part program.

The Insert | Alignment | Leapfrog menu option brings up the Leapfrog / Relocation dialog box. This menu option is disabled in offline mode. You must be connected to a physical supported portable machine.

Leapfrog / Relocation dialog box

The Leapfrog / Relocation dialog box allows you to move supported portable machines in order to measure parts that are too large for your CMM. You should be aware of machine accuracy limitations before using this method.

Currently, supported machines include FARO, ROMER, Garda, and GOM.

Your hardware key (portlock) also needs to be programmed to support your portable machine.

The basis for leapfrog is to measure a series of features, and then after moving the machine, re-measure the same features in the same order. This creates a transformation and makes the machine behave as if it were the same coordinate system before the move.

Prior to PC-DMIS version 4.2, Leapfrog transformation information was stored in a separate file and was thereby independent of all part programs. This meant the Leapfrog was still active in newly created part programs and you had to remove it by clicking the Reset button on the Leapfrog / Relocation dialog box. In version 4.2 and later, however, this has changed. Leapfrog transformation information is now stored with the part program that used the Leapfrog operation; you no longer have to remove the Leapfrog from new part programs.

A Leapfrog command is entered into the Edit window when the Accept button is clicked.

The command line in the Edit window would read:
LEAPFROG/TOG1, NUM, TOG2

TOG1: This first parameter in the Leapfrog command is a toggle field that relates to the different types of measurement options available in the dialog box. These include:

1. SPHERES (Measure 3 Spheres option)

2. PSETS (Measure 3 Point Sets option)

3. POINTS (Measure 3 Points option)

4. DATUMS (Measure Datums option)

There is also an OFF value for this parameter, in which case the other two parameters will not be displayed. The OFF value will turn off leapfrog translation.

NUM: This second parameter in the Leapfrog command is the number of hits you want to take. This corresponds to the Hits box in the Leapfrog dialog box.

TOG2: This last parameter in the Leapfrog command is a toggle field allowing you to switch between either a FULL or PARTIAL leapfrog. This parameter corresponds to the Half Relocation option in the dialog box.

When this command is executed, you will be prompted to take your hits, and after all the hits are taken, a leapfrog translation will be in effect.

More:

Measure Options

Number of Hits

Half Relocation

Datum Program File

Available and Used Lists

Measure Marked

Measure All

Results area

Reset

Accept

OK