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Basic Characteristics RAPID

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Limitations<br />

moved back to this point. Using program displacement, the robot then moves relative<br />

to the searched position, sp.<br />

Zone data for the positioning instruction that precedes SearchL must be used carefully.<br />

The start of the search, i.e. when the I/O signal is ready to react, is not, in this case, the<br />

programmed destination point of the previous positioning instruction, but a point along<br />

the real robot path. Figure 2 to Figure 4 illustrate examples of things that may go wrong<br />

when zone data other than fine is used.<br />

Start point with<br />

zone data z10<br />

Figure 2 A match is made on the wrong side of the object because the wrong zone data was used.<br />

Start point with<br />

zone data z10<br />

Figure 3 No match detected because the wrong zone data was used.<br />

Start point with<br />

zone data z10<br />

Start point with<br />

zone data fine<br />

Search object<br />

End point<br />

Search object<br />

End point<br />

End point<br />

Start point with<br />

zone data fine<br />

Start point with<br />

zone data fine<br />

Search object<br />

Figure 4 No match detected because the wrong zone data was used.<br />

Typical stop distance using a search velocity of 50 mm/s:<br />

- without TCP on path (switch \Stop) 1-3 mm<br />

- with TCP on path (switch \PStop) 12-16 mm<br />

8-SearchL-4 <strong>RAPID</strong> Reference Manual

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