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Chapter 3 Before positioning
3- 7
3.1.4 Speed/position switching control
• It change speed control to position control by switching command (VTP instruction).
• In case of speed/position switching control, items affecting the operation are different according to
control method.
- First, object moves by speed control. If speed/position switching control is executed, target will
move by position control.
- At this time, position control is executed by absolute coordinates with initializing the current
position as 0. So coordinates item doesn’t affect the operation.
- Since control method also changes by speed/position switching, control method in the operation
data doesn’t affect the operation.
- In case of speed/position switching, object keeps its previous direction.
(1) Example
•
It assumes that operation data is specified as shown table 3-4.
Step
no.
Coord
.
Pattern Contr
ol
Metho
d
Rep
step
Address
[Pulse]
M
Code
A/D
No.
Speed
[pls/s]
Dwell [
㎳
]
1
INC
END
SPD
SIN
0
1000
11
1
500
100
<Table 3-4 operation data example of speed/position switching control>
<
Figure 3-4 Operation of speed/position switching control
>
These items don’t affect the operation in case of speed
These items don’t affect the operation when changed into position
switching
occurrence flag
Содержание XBC-DN20S
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Страница 308: ...Appendix 4 Dimension App 4 3 3 High end type main unit XBC DN32H XEC DN32H XEC DP32H XBC DR32H XEC DR32H ...
Страница 309: ...Appendix 4 Dimension App 4 4 XBC DN64H XEC DN64H XEC DP64H XBC DR64H XEC DR64H ...
Страница 311: ...Appendix 4 Dimension App 4 6 XBE DC08A XBE DC16A XBE TN08A XBE TN16A XBE DR16A XBE RY08A ...
Страница 312: ...Appendix 4 Dimension App 4 7 5 Communication module XBL C41 21A XBL EMTA ...
Страница 313: ...Appendix 4 Dimension App 4 8 5 Special module XBF AD04A XBF DV04A ...