12 - 44
MELSEC-A
12 CONTROL AUXILIARY FUNCTIONS
(1) Control details
The following drawing shows the operation during a speed change.
V
V1
V2
V3
t
Speed changes to V2.
Operation during
positioning by V1.
Speed changes to V3.
Md. 50 In speed change processing flag
Fig. 12.22 Speed change operation
(2) Precautions during control
(a) Control is carried out as follows at the speed change during continuous path
control.
1) When no speed designation (current speed) is provided in the next
positioning data:
The next positioning data is controlled at the " Cd.16 New speed
value".
2) When a speed designation (current speed) is provided in the next
positioning data:
The next positioning data is controlled at its command speed
( Da.7 ).
Positioning control
P1
Designated speed in P2
Cd. 16 New speed value
Next control
P2
Speed change
command
Designated speed in P1
[a] When no speed designation
(current speed) is provided.
[b] When a speed designation
is provided.
Fig. 12.23 Speed change during continuous path control
(b) When changing the speed during continuous path control, the speed change
will be ignored if there is not enough distance remaining to carry out the
change.
Содержание A1SD75M1
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Страница 332: ...7 18 MELSEC A 7 MEMORY CONFIGURATION AND DATA PROCESS MEMO...
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Страница 422: ...9 64 MELSEC A 9 MAIN POSITIONING CONTROL MEMO...
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Страница 673: ...Appendix 5 MELSEC A APPENDICES Axis address mm inch degree pulse Axis address mm inch degree pulse...
Страница 679: ...Appendix 11 MELSEC A APPENDICES Initial value Axis 1 Axis 2 Axis 3 Remarks 0 0 0 1 1 0 0 0 0 0 300 0 0 0...
Страница 683: ...Appendix 15 MELSEC A APPENDICES Initial value Axis 1 Axis 2 Axis 3 Remarks 0 0 1 0 0 50 80 0 0 980...
Страница 691: ...Appendix 23 MELSEC A APPENDICES Initial value Axis 1 Axis 2 Axis 3 Remarks 0 0 0 0 0 50 80 0 0 0 0 0 980 4000 0...
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