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Chapter 9 Major Positioning Control
POINTS
When the movement amount is converted to the actual number of command
pulses, a fraction appears after the decimal point, according to the movement
amount per pulse. This fraction is normally retained in the Simple Motion module
and reflected at the next positioning.
For the fixed-feed control, since the movement distance is maintained constant (=
the command number of pulses is maintained constant), the control is carried out
after the fraction pulse is cleared to zero at start.
[Accumulation/cutoff for fractional pulses]
When movement amount per pulse is 1.0 [
m] and movement for 2.5 [
m] is
executed two times.
Conversion to command pulses: 2.5 [
m] ÷ 1.0 = 2.5 [PLS]
2PLS
2PLS
2PLS
3PLS(=2.5+0.5)
Movement
amount
0.5 PLS hold by the Simple Motion
module is carried to next positioning.
INC Linear 1
Fixed-feed 1
0.5 PLS hold by the Simple Motion
module is cleared to 0 at start and
not carried to next positioning.
2.5 m
2.5 m
When the "reference axis speed" is set during 3-axis fixed-feed control, set so the
major axis side becomes the reference axis. If the minor axis side is set as the
reference axis, the major axis side speed may exceed the "
Pr.8
Speed limit value
".
Refer to Section 9.1.6 "Interpolation control" for the reference axis and
interpolation axis combinations.
Summary of Contents for MELSEC-L Series
Page 2: ......
Page 30: ...MEMO ...
Page 70: ...2 10 Chapter 2 System Configuration MEMO ...
Page 83: ...3 13 Chapter 3 Specifications and Functions MEMO ...
Page 103: ...3 33 Chapter 3 Specifications and Functions MEMO ...
Page 107: ...3 37 Chapter 3 Specifications and Functions MEMO ...
Page 111: ...3 41 Chapter 3 Specifications and Functions MEMO ...
Page 115: ...3 45 Chapter 3 Specifications and Functions MEMO ...
Page 140: ...4 22 Chapter 4 Installation Wiring and Maintenance of the Product MEMO ...
Page 253: ...5 113 Chapter 5 Data Used for Positioning Control MEMO ...
Page 342: ...5 202 Chapter 5 Data Used for Positioning Control MEMO ...
Page 438: ...7 20 Chapter 7 Memory Configuration and Data Process MEMO ...
Page 440: ...MEMO ...
Page 485: ...9 25 Chapter 9 Major Positioning Control MEMO ...
Page 594: ...9 134 Chapter 9 Major Positioning Control MEMO ...
Page 624: ...10 30 Chapter 10 High Level Positioning Control MEMO ...
Page 656: ...11 32 Chapter 11 Manual Control MEMO ...
Page 690: ...12 34 Chapter 12 Expansion Control MEMO ...
Page 798: ...13 108 Chapter 13 Control Sub Functions MEMO ...
Page 866: ...14 68 Chapter 14 Common Functions MEMO ...
Page 884: ...15 18 Chapter 15 Dedicated Instructions MEMO ...
Page 899: ...16 15 Chapter 16 Troubleshooting MEMO ...
Page 1036: ...Appendix 88 Appendices MEMO ...
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