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Basic Characteristics RAPID

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Coordinate Systems Motion and I/O Principles<br />

x<br />

Figure 9 Tool coordinate system, as usually defined for an arc-welding gun (left) and<br />

a spot welding gun (right).<br />

The tool coordinate system is defined based on the wrist coordinate system<br />

(see Figure 10).<br />

Figure 10 The tool coordinate system is defined relative to the wrist coordinate system,<br />

here for a gripper.<br />

1.3.3 Stationary TCPs<br />

z<br />

Top<br />

x<br />

If the robot is holding a work object and working on a stationary tool, a stationary TCP<br />

is used. If that tool is active, the programmed path and speed are related to the work<br />

object held by the robot.<br />

This means that the coordinate systems will be reversed, as in Figure 11.<br />

6-10 <strong>RAPID</strong> Reference Manual<br />

y<br />

z<br />

x<br />

Tool coordinate system<br />

Top<br />

z

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