YASKAWA MP2200

7
Absolute Position Detection
7.3.1
Finite Length Axis
7-14
( 2 ) Position Management with a Finite Length Axis
Initialize the axis position as described next when power is turned ON if an absolute encoder is used
for a finite length axis.
• Current position for the machine coordinate system = Encoder position when servo power is
turned ON
*
+ Zero Point Offset (setting parameter OL

48)
* The encoder position when servo power is turned ON is as follows:
Multiturn data
×
Number of encoder pulses + initial increment pulses.
Refer to your SERVOPACK manual for information on the initial increment pulses.
The Zero Point Offset (setting parameter OL

48) is always valid for a finite length axis. If the
machine coordinate system zero point is changed during machine operation, the current position may
become inaccurate.
The meaning of setting parameter OL

48 will differ for a finite length axis and infinite length
axis.
• Finite Length Axis
Set OL

48 to the difference between IL

48 and OL

10 (IL

48 – OL

10) to
make the current position of the machine coordinate system the zero position.
IL

10 = 10,000 and OL

48 = 100
Setting the current position of the machine coordinate system to 0.
100
−
10000 =
−
9900 Set OL

48 to
−
9,900
IL

10: Target Position (CPOS)
EXAMPLE
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