Yaskawa MP940 - Manual (Page 441)

11.3 Position Control
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∗ 1. When an infinite length axis is selected, a range of 0 to (infinite length
axis reset position - 1) is reported.
With the position reference for an infinite length axis, the present
travel distance (incremental travel distance) is added to the previous
position reference (OLC012), and reset as the position reference
(OLC012).
The position reference (OLC012) must not be set in the range of 0 to
(infinite length axis reset position - 1).
∗ 2. When an infinite length axis is selected, a range of 0 to (infinite length
axis reset position - 1) is reported.
∗ 3. With a finite length axis, this position is the same as that in ILC002.