Position Correction Table Settings; Measure The Positions Required For The Position Correction Table - YASKAWA Sigma-7 Series Product Manual

3.4 Position Correction Table Settings

3.4.1 Measure the Positions Required for the Position Correction Table

3.4 Position Correction Table Settings
The Position Correction Table settings are configured with the following steps.
1.
Measure positions required for the Position Correction Table.
2.
Create the Position Correction Table.
3.
Write the Position Correction Table to the SERVOPACK.
4.
Select Pn847 = n.
Correction Table.
5.
Turn the power supply to the SERVOPACK OFF and ON again.
*1.
The SigmaWin+ or MEM_WR command can be used to create the Position Correction Table and write it to the
SERVOPACK.
Refer to the following sections for details.
*2.
The Position Correction Table (table entries, pre-correction positions, and correction amounts) cannot be written
to the SERVOPACK when the servo is ON. Write the Position Correction Table when the servo is OFF.
*3.
The Position Correction Table can also be enabled with the CONFIG command (CONFIG_MOD = 0).
In this case, ensure that both axes are in the servo OFF state before sending the command.
3.4.1 Measure the Positions Required for the Position Correc-
tion Table
Measure positions in order to learn the size of the correction amount necessary for the slave
axis in regard to measured positions along the master axis.
The measurement method of positions is given below.
1.
Turn ON the servo.
2.
When using an incremental encoder, move the gantry to the machine origin.
When using an absolute encoder, proceed to the next step.
3.
Use a movement command and move the gantry to the measurement position.
4.
Turn OFF the servo.
5.
Monitor the value of APOS (Feedback Position) of each axis.
6.
Write down the monitored values.
7.
Repeat steps 1 to 6 for the number of measurements that will be registered to the Posi-
tion Correction Table.
3-6

1 (Position Correction Table Selection) to enable the Position
3.4.3 Setting Method with the SigmaWin+ on page 3-8
3.4.4 Setting Method with the MEM_WR Command on page 3-20
Pm
Pm2
Pm1
P 1
*1
Pm7
Pm6
Pm5
Pm4
P 4
P
P 2
Operating Range
*1, *2
*3
Ma ter axi
lave axi
P 7
P 6
P 5