Circular Interpolation Operation; Circular Interpolation [Center Coordinate Specification] - Mitsubishi FX3U-20SSC-H User Manual

FX -20SSC-H Positioning Block User's Manual
3U
9.11

Circular Interpolation Operation

The circular interpolation operation is a positioning procedure, available only in the table operation.
The circular interpolation operation has the center coordinate specification/radius specification formats.
For details on controlling by table operation, and changing the operation speed, refer to the following sections.

9.11.1 Circular interpolation [center coordinate specification]

The work piece moves from the start point to the target address, following the circular arc locus around the
specified center coordinate.
1. Operation
Target address 1 (X,Y axis)
CW
(Clockwise)
START point
1) Set table information, X-axis speed, X/Y axis position (address) information and center coordinate in the
XY table information.
2) Set "table operation (simultaneous)" in the operation pattern selection.
3) When turning the X-axis START command ON at the table operation start number with the specified
circular interpolation (center, CW direction) / (center, CCW direction), the work piece moves to the target
position at the specified speed, following the circle's center coordinate.
4) The work piece stops at the XY coodinate in target address 1, and the operation ends, turning the
positioning completion signal ON.
Table information (XY-axis)
Table operation
(simultaneous)
Table operation start number
STOP command
START command
m code OFF
Change command in operation
disabled
Speed change command in
positioning operation
180
→ For details on the operation speed change, refer to Section 7.6
→ For details on the radius specification, refer to Subsection 9.11.2
CCW
(Counterclockwise)
Center (i,j)
START command
Positioning completion
→ For the parameters, control data and monitor data, refer to Chapter 11
Operation pattern selection BFM #520 b10
Operation command 1
Operation command 1
Operation command 1
Operation command 1
Operation command 1
→ For details on the table operation, refer to Chapter 10
→ For details on the torque limit, refer to Subsection 7.9.3
→ For details on the STOP command, refer to Section 7.4
Interpolation
time constant
Speed
ON
OFF
ON
OFF
→ For details on the table operation, refer to Chapter 10
BFM Number
X-axis
BFM #7000 to #12999
BFM #521
BFM #518 b1
BFM #518 b9
BFM #518 b11
BFM #518 b12
BFM #518 b13
9 Positioning Control
9.11 Circular Interpolation Operation
Interpolation
time constant
Maximum speed
Vector speed
(operation speed 1
of X axis)
Target address
(X,Y axis)
Data type
Y-axis
Table information
BFM #620 b10 Control data
*1
Control data
BFM #621
BFM #618 b1 Control data
*1
Control data
BFM #618 b9
*1
Control data
BFM #618 b11
*1
Control data
BFM #618 b12
*1
Control data
BFM #618 b13
Time
ON