Reading Position Data When The Power Supply Is Turned On - YASKAWA SVC User Manual

5.2.5 Reading Position Data When the Power Supply Is
Turned ON
This section describes reading the position data from an absolute encoder.
Reading the Position Data from the Absolute Encoder
When the power supply to the MP3000 is turned ON, the MP3000 reads the absolute encoder
position data from the slave SERVOPACK through MECHATROLINK-III communications.
The MP3000 system automatically reads the position data, so no programming is required.
Turn ON the power supply to the slave SERVOPACK first, or simultaneously turn ON the power
supplies to the MP3000 and slave SERVOPACK.
The flow of the procedure from turning ON the power supply to obtaining the position data is
illustrated in the following figure.
Monitor parameters
Position Monitors
(IL 0E
to IL 16)
Process
Order
1
2
3
4

5.2.5 Reading Position Data When the Power Supply Is Turned ON

MP3000
SVC Function Module
4. Electronic gear
origin offset
Current value in
machine coordinate
system calculated.
After the power supply is turned ON, the MP3000 sends a request to the slave SERVOPACK
to send the current value when MECHATROLINK communications are established.
The slave SERVOPACK gets the current value data from the absolute encoder when it
receives the current value request.
The slave SERVOPACK sends the current value data position information to the MP3000.
The MP3000 calculates the current value in the machine coordinate system from the elec-
tronic gear and machine coordinate system zero point offset (in the OL48 setting
parameter) data and places it in the position monitor registers.
SERVOPACK
1. Requesting the
current value data
MECHATROLINK-III
3. Sending the current
value data
Description
5.2 Absolute Encoders
Motor
Encoder
2. Sending the absolute
value data
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