Setting The Origin Of The Absolute Encoder; Absolute Encoder Origin Offset; Setting The Origin Of The Absolute Linear Encoder - YASKAWA SGD7S-1R9D Product Manual

5.16 Setting the Origin of the Absolute Encoder

5.16.1 Absolute Encoder Origin Offset

5.16

Setting the Origin of the Absolute Encoder

5.16.1 Absolute Encoder Origin Offset

The origin offset of the absolute encoder is a correction that is used to set the origin of the
machine coordinate system in addition to the origin of the absolute encoder. Set the offset
between the absolute encoder origin and the machine coordinate system position in home off-
set (607C hex).
The offset is added to position actual value (6064 hex) after the parameters are enabled when
the power supply is turned ON or with user parameter configuration (2700 hex).
Index
607C hex
Example

5.16.2 Setting the Origin of the Absolute Linear Encoder

You can set any position as the origin in the following linear encoders.
• From Mitutoyo Corporation
ABS ST780A Series or ST1300 Series
Models: ABS ST78A/ST78AL/ST13
• Renishaw PLC
EVOLUTE Series
Models: EL36Y-
• Renishaw PLC
RESOLUTE Series
Models: RL36Y-
Important
Preparations
The following conditions must be met to set the origin of the absolute linear encoder.
• The parameters must not be write prohibited.
• The servo must be OFF.
5-52
Subindex Name
0 Home offset
If the encoder position (X) is at the origin (0), then home offset (607C hex) would be set to the
value of -X.
Position actual value
(6064 hex)
Encoder coordinate
Absolute encoder origin
1. After you set the origin, the /S-RDY (Servo Ready) signal will become inactive because the
system position data was changed. Always turn the SERVOPACK power supply OFF and ON
again.
2. After you set the origin, the Servomotor phase data in the SERVOPACK will be discarded. If
you are using a Linear Servomotor without a Polarity Sensor, execute polarity detection again
to save the Servomotor phase data in the SERVOPACK.
Data
Access Data Ranges
Type
-536,870,912
DINT RW
to 536,870,911
Home offset
(607C hex (PnB46))
Default Saving to
Value EEPROM
0 Yes
Origin of machine
coordinate system
Encoder position (X)