Yaskawa MP930 - Manual (Page 237)

Absolute Position Detection
7.2.2 Setting Related Parameters
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7.2.2 Setting Related Parameters
This section describes absolute position detection parameters in the MP930 parameters.
Set the following parameters prior to starting up the absolute position detection system.
Table 7.1 MP930 Unit Parameters
Parameter No. Name Setting Range Units Initial
Value
Fixed
Parameter 3 Encoder selection 0: Incremental encoder
1: Absolute encoder
− 0
Fixed
Parameter 8 Number of FB pulses per
Servomotor 1 rotation Multiples of 4 in a range
from 4 to 65535 1 = 1 pulse 2048
Fixed
Parameter 17
b5 Finite Length
Mode/Infinite Length
Mode Axis Selection 0: Finite Length Mode
Axis Setting
1: Infinite Length Mode
Axis Setting
− 0
Fixed
Parameter 22 Maximum Infinite Length
Counter value 1 to 2 31 −1 1 = 1
reference unit 360000
Fixed
Parameter 23 Maximum Absolute
Encoder Rotations 1 to ±2 31 −1 1 = 1 rotation 99999
Setting
Parameter 7
(OLxx06) Zero Point Position Offset
Setting for a Machine
Coordinate System 0 to ±2 31 −1 reference
units 0
Table 7.2 Servopack User Constants
User Constant Name Setting Range Units Initial
Value
Cn-0001bE Encoder selection 0: Incremental encoder
1: Absolute encoder
− 0
Cn-0032 Absolute Encoder Zero
Point Position Offset 0 to ±2 31 −1 reference
units 0
Encoder Selection Setting
MP930 fixed parameter 3 and Servopack user constant Cn-0001bE are used to set absolute en-
coder for the axis whose absolute position will be detected.
Absolute position detection system can be set for each axis and any combination of incremental
and absolute position detection is possible in this system.
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