Yaskawa MP920 User's Manual Design - Manual (Page 454)

10.2 Starting the Absolute Position Detection Function
10-9
10
Axis Selection
• MP920 fixed parameter No. 17, bit 5
Set either an infinite or finite length mode for controlled axis movement.
For information on position control methods for finite and infinite length axes, refer to 10.3
Using an Absolute Encoder.
Infinite Length Axis Reset Position
• MP920 fixed parameter No. 23
Set the number of Infinite Length Mode Axis rotations (refer to 10.3.2 Infinite Length Mode
Axis) in reference units. This parameter is enabled when Infinite Length Axis is selected.
The set data can be monitored in the monitoring parameter IL 1C (POSMAX Monitor).
Max. Number of Absolute Encoder Turns/Multi-turn Limit Setting
• MP920 fixed parameter No. 25
•
Σ-II Series SERVOPACK parameter Pn205
Set the maximum value of the encoder rotations that is managed by the SERVOPACK and
Machine Controller.
The settings depend on the SERVOPACK model and the axis type to be used as shown in the
table below.
* If the fixed parameter No. 25 is set to 65535 for the Infinite Length Axis
for Σ-II series SERVOPACK, the Fixed Parameter Setting Error
(IW††00 Bit2 = 0) will occur.
If the above parameters are not correctly set, position may be shifted.
Fixed Parameter No. 25 SERVOPACK Parameter
Pn205
Finite Length Axis for Σ Se-
ries SERVOPACK
99999 −
Infinite Length Axis for Σ
Series SERVOPACK
99999 −
Finite Length Axis for Σ -II
Series SERVOPACK
65535 65535
Infinite Length Axis for Σ -II
Series SERVOPACK
65534 * 65534 *
IMPORTANT