9 Positioning Control
9.11 Circular Interpolation Operation
183
FX
3U
-20SSC-H Positioning Block User's Manual
1
Int
roduct
ion
2
Sy
stem
conf
igur
ati
on
3
Exam
ple
C
onnect
ion
4
Ins
tall
a
tion
5
Wi
rin
g
6
Me
m
o
ry
confi
gur
at
ion
and da
ta
7
Befor
e
star
ting
positi
oning
contr
o
l
8
M
anual c
ont
ro
l
9
Posit
ioni
ng
C
ont
rol
10
Table O
per
at
ion
9.11.2
Circular interpolation [radius specification]
The work piece moves in a circular arc with a specified radius from the start point to the target address.
1. Operation
1) Set the table information, X-axis speed, X/Y axis position (address) and radius in the XY table information.
2) When turning the X-axis START command ON at the table operation start number with the specified
circular interpolation (radius, CW direction) / (radius, CCW direction), the work piece moves to the target
position at the specified speed, following the circle’s center coordinate calculated from the start point,
target position and radius.
3) The work piece stops at the XY coodinate in the target address 1, and the operation ends, turning the
positioning completion signal ON.
→
For the parameters, control data and monitor data, refer to Chapter 11
→
For details on the table operation, refer to Chapter 10
BFM Number
Data type
X-axis
Y-axis
Table information (XY-axis)
BFM #7000 to #12999
Table information
Table operation
(simultaneous)
Operation pattern selection BFM #520 b10
BFM #620 b10
Control data
Table operation start number
BFM #521
BFM #621
*1
Control data
STOP command
Operation command 1
BFM #518 b1
BFM #618 b1
Control data
START command
Operation command 1
BFM #518 b9
BFM #618 b9
*1
Control data
m code OFF
Operation command 1
BFM #518 b11
BFM #618 b11
*1
Control data
Change command in operation
disabled
Operation command 1
BFM #518 b12
BFM #618 b12
*1
Control data
Speed change command in
positioning operation
Operation command 1
BFM #518 b13
BFM #618 b13
*1
Control data
Remaining distance operation
cancel command
Operation command 2
BFM #519 b0
BFM #619 b0
*1
Control data
X-START(Input terminal)
-
-
Input terminal
m code number
BFM #9
BFM #109
*1
Monitor data
Number of the table in operation
BFM #16
BFM #116
*1
Monitor data
Positioning completion
Status information
BFM #28 b6
BFM #128 b6
Monitor data
READY/BUSY
Status information
BFM #28 b0
BFM #128 b0
Monitor data
Standby for remaining travel
distance at stop
Status information
BFM #28 b7
BFM #128 b7
Monitor data
Received target address (Ver.1.20 or later)
BFM #25,#24
BFM #125,#124
Monitor data
Received target speed (Ver.1.20 or later)
BFM #27,#26
BFM #127,#126
*1
Monitor data
Current address (user)
BFM #1,#0
BFM #101,#100
Monitor data
Maximum speed
Vector speed
(operation speed 1
of X axis)
Interpolation
time constant
Interpolation
time constant
Time
Speed
START command
Target address
(X,Y axis)
ON
OFF
OFF
ON
Positioning completion
ON
START point
Target address
(X,Y axis)
Clockwise
Big
circle (b)
Small
circle (a)
Radius
-r
Radius
+r