459
Programming Examples
Section 8-1
8-1-11 Positioning with Improved Locus Accuracy in Circular
Interpolation
Operation
This operation is essentially the same as described in
8-1-3 Positioning with
Linear and Circular Interpolation
except that locus accuracy in the circle will
be improved. When performing circular interpolation, the axes will follow the
inner side of the expected circle as the feed rate increases. Locus accuracy
will be improved by increasing the feed forward gain of the X and Y axes using
G69 (change parameter). Normally overshooting will occur when the axes
stop or when the target position is inverted if the feed forward gain in the servo
system is increased too much. Therefore, set the feed forward gain to 20% for
linear interpolation-only operation and 60% for circular interpolation-only
operation.
Programming Example
N000
P003
XY
N001
G17
N002
G69
#6/X20
Y20
N003
G01
X200
Y100
F50
N004
G69
#6/X60
Y60
N005
G02
X300
Y200
R100
N006
G69
#6/X20
Y20
N007
G01
Y300
N008
G69
#6/X60
Y60
N009
G02
X400
Y400
R–100
N010
G79
Explanation
N002, N006:
Sets feed forward gain for the X and Y axes to 20% for linear
interpolation operation.
N004, N008:
Sets feed forward gain for the X and Y axes to 60% only for cir-
cular interpolation operation.
See
8-1-3 Positioning with Linear and Circular Interpolation
for details on
other settings.
Summary of Contents for CS1W-MC221 -
Page 1: ...Motion Control Units Cat No W359 E1 04 CS1W MC221 V1 421 V1 OPERATION MANUAL ...
Page 2: ...CS1W MC221 V1 421 V1 Motion Control Units Operation Manual Revised February 2008 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 11: ...xii ...
Page 15: ...xvi ...
Page 19: ...xx ...
Page 27: ...xxviii Conformance to EC Directives 6 ...
Page 133: ...106 Installation Section 2 2 2 2 4 Dimensions CS1W MC421 CS1W MC221 ...
Page 173: ...146 Connecting Peripheral Devices Section 2 7 ...
Page 227: ...200 Command Area Section 3 6 ...
Page 351: ...324 Interface Specifics Section 5 4 ...
Page 513: ...486 Absolute Encoder Interface Specifications Section 9 7 ...
Page 575: ...548 Error Log Section 12 6 ...
Page 589: ...562 Performance Appendix A ...
Page 655: ...628 Control Bit Flag Timing Charts Appendix E ...
Page 683: ...656 Origin Search Patterns Appendix F ...
Page 685: ...658 Encoder Divider Rate and Rotation Speed for OMRON Servo Drivers Appendix G ...