9
Absolute Position Detection
9.1.3
Finite Length/Infinite Length Axes and Absolute Position Detection
9-4
9.1.3 Finite Length/Infinite Length Axes and Absolute Position Detection
There are two types of axes. An infinite length axis resets the current position to a specified value
every rotation, and the finite length axis does not.
Set a finite length axis if return and other operations are performed only within a specified range or
for an axis that moves in one direction only without resetting the position every rotation.
Set an infinite length axis for conveyor belts and other operations that require the position to be reset
every rotation.
There are two types of position control available with an infinite length axis. Simple Absolute Infi-
nite Length position control and Infinite Length position control are available if Simple Absolute
Infinite Length position control is not used.
An absolute encoder performs absolute position detection with a finite or infinite length axis depend-
ing on the Axis Type setting (fixed parameter 1, bit 0) of the MP2300
Set the MP2300 fixed parameters and SERVOPACK parameters to select the absolute position detec-
tion function with an absolute encoder. The setting procedures are different for finite and infinite
length axes. Refer to 9.2.1 System Startup Flowchart on page 9-5 for details.
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