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Rockwell Automation GMLC Reference Manual User Manual

Page 160

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Publication GMLC-5.2 - November 1999

Chapter

4

Using the Imaginary Axis

The imaginary axis (available only in firmware 2.2 and later) is an
internal axis with no connection to a drive or encoder. It is used as a
master axis that other real axes are synchronized to when no physical or
virtual axis is available. As such, it can be thought of as a built-in virtual
axis not requiring AxisLink. As shown below, the output of the imaginary
axis is its command position—it has no actual position.