9 - 7
Chapter 9 Major Positioning Control
[2] Continuous positioning control
(1) The machine always automatically decelerates each time the positioning is
completed. Acceleration is then carried out after the QD77MS command
speed reaches 0 to carry out the next positioning data operation. If a dwell
time is designated, the acceleration is carried out after the designated time
elapses.
(2) In operation by continuous positioning control (operation pattern "01"), the
next positioning No. is automatically executed. Always set operation pattern
"00" in the last positioning data to complete the positioning.
If the operation pattern is set to positioning continue ("01" or "11"), the
operation will continue until operation pattern "00" is found.
If the operation pattern "00" cannot be found, the operation may be carried
out until the positioning data No. 600. If the operation pattern of the
positioning data No. 600 is not completed, the operation will be started again
from the positioning data No. 1.
[QD77MS4 operation example]
t
OFF
ON
OFF
ON
OFF
ON
OFF
Positioning continue (01)
Address (+) direction
Address (-) direction
Positioning
complete (00)
Dwell
time
ON
Positioning continue (01)
Start complete signal
BUSY signal
Positioning complete signal
Positioning start signal
[Y10, Y11, Y12, Y13]
[X10, X11, X12, X13]
[XC, XD, XE, XF]
[X14, X15, X16, X17]
Dwell time
not designated
V
(Note): Refer to Section 3.3 for input/output signal of QD77MS16.
Fig. 9.2 Operation during continuous positioning control
Summary of Contents for MELSEC-Q QD77MS
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Page 232: ...5 111 Chapter 5 Data Used for Positioning Control MEMO...
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Page 337: ...6 22 Chapter 6 Sequence Program Used for Positioning Control...
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Page 433: ...8 20 Chapter 8 OPR Control MEMO...
Page 458: ...9 25 Chapter 9 Major Positioning Control MEMO...
Page 593: ...10 30 Chapter 10 High Level Positioning Control MEMO...
Page 625: ...11 32 Chapter 11 Manual Control MEMO...
Page 659: ...12 34 Chapter 12 Expansion Control MEMO...
Page 767: ...13 108 Chapter 13 Control Sub Functions MEMO...
Page 813: ...14 46 Chapter 14 Common Functions MEMO...
Page 831: ...15 18 Chapter 15 Dedicated Instructions MEMO...
Page 846: ...16 15 Chapter 16 Troubleshooting MEMO...
Page 892: ...16 61 Chapter 16 Troubleshooting MEMO...
Page 971: ...Appendix 62 Appendices MEMO...
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