12 - 21
MELSEC-Q
12 CONTROL SUB FUNCTIONS
[2] Control Precautions
(1) If the movement amount designated by the positioning data is small when
the continuous path control is executed, the output speed may not reach the
designated speed.
(2) The movement direction is not checked during interpolation operation.
Therefore, a deceleration stops are not carried out even the movement
direction changes. (See below) For this reason, the output will suddenly
reverse when the reference axis movement direction changes. To prevent
the sudden output reversal, assign not the continuous path control "11", but
the continuous positioning control "01" to the positioning data of the passing
point.
[Positioning by interpolation]
[Operation of reference axis]
Positioning
data No.1
Positioning
data No.2
Positioning data No.1 Continuous path control
Partner axis
Reference
axis
Positioning data No.2
Positioning data No.1
v
t
[Operation of partner axis for interpolation]
Positioning data No.2
Positioning data No.1
v
t
Fig. 12.12 Path and output speed of various axes when movement direction varies during continuous
path control
Summary of Contents for Melsec-Q QD75D1
Page 1: ......
Page 2: ......
Page 22: ...A 20 MEMO ...
Page 24: ...MEMO ...
Page 41: ...1 17 MELSEC Q 1 PRODUCT OUTLINE MEMO ...
Page 48: ...1 24 MELSEC Q 1 PRODUCT OUTLINE MEMO ...
Page 60: ...2 12 MELSEC Q 2 SYSTEM CONFIGURATION MEMO ...
Page 137: ...5 33 MELSEC Q 5 DATA USED FOR POSITIONING CONTROL MEMO ...
Page 232: ...5 128 MELSEC Q 5 DATA USED FOR POSITIONING CONTROL MEMO ...
Page 252: ...6 20 MELSEC Q 6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL ...
Page 253: ...6 21 MELSEC Q 6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL ...
Page 278: ...6 46 MELSEC Q 6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL MEMO ...
Page 292: ...MEMO ...
Page 436: ...9 120 MELSEC Q 9 MAJOR POSITIONING CONTROL MEMO ...
Page 464: ...10 28 MELSEC Q 10 HIGH LEVEL POSITIONING CONTROL MEMO ...
Page 638: ...14 24 MELSEC Q 14 DEDICATED INSTRUCTIONS MEMO ...
Page 647: ...15 9 MELSEC Q 15 TROUBLESHOOTING MEMO ...
Page 686: ...15 48 MELSEC Q 15 TROUBLESHOOTING MEMO ...
Page 839: ...Appendix 153 MELSEC Q APPENDICES 6 QD75D4N 90 23 27 4 12 98 4 46 Unit mm ...
Page 840: ...Appendix 154 MELSEC Q APPENDICES 7 QD75P1 QD75P2 QD75P4 27 4 23 98 90 4 46 unit mm ...
Page 841: ...Appendix 155 MELSEC Q APPENDICES 8 QD75D1 QD75D2 QD75D4 27 4 23 90 12 98 4 46 unit mm ...
Page 842: ...Appendix 156 MELSEC Q APPENDICES MEMO ...
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