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9 MAJOR POSITIONING CONTROL
9.2.3 2-axis linear interpolation control
Y axis movement
Reverse direction
In "2-axis linear interpolation control" ("
linear 2), two motors are used to carry out position control in a linear path while
carrying out interpolation for the axis directions set in each axis.
(Refer to Section 9.1.6 "Interpolation control" for details on interpolation control.)
[1] 2-axis linear interpolation control (ABS linear 2)
Operation chart
In absolute system 2-axis linear control, addresses established by a machine OPR
on a 2-axis coordinate plane are used. Linear interpolation positioning is carried
out from the current stop position (start point address) to the address (end point
Da.6
address) set in "
Forward direction (Y axis)
Start point address (X
(current stop position)
Y
2
amount
Y
1
Reverse direction
Example
When the start point address (current stop position) is (1000, 1000) and the end point address
(positioning address) is (10000, 4000), positioning is carried out as follows.
Axis 2 movement amount
(4000-1000=3000)
Da.2
Control system" = ABS linear 2, INC
Positioning address/movement amount".
,Y
)
1
1
End point address (X
Movement by linear interpolation of the X axis and Y axis
X
X
1
2
X axis movement amount
Start point address
Axis 2
(current stop position)
4000
1000
0
1000
5000
Axis 1 movement amount (10000-1000=9000)
9 - 29
MELSEC-Q
,Y
)
2
2
(positioning address)
Forward direction (X axis)
End point address
(positioning address)
Axis 1
10000
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Troubleshooting
