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10 ADVANCED POSITIONING CONTROL
10.3.8 Repeated start (FOR condition)
In a "repeated start (FOR condition)", the data between the "start block data" in which
"6: FOR condition" is set in "
Da.12 Special start command" and the "start block data"
in which "7: NEXT start" is set in "
Da.12 Special start command" is repeatedly
executed until the establishment of the conditions set in the "condition data".
The condition is evaluated at the time of change to the point of "7: NEXT start" (just
before the positioning control for the point of NEXT start).
(The "condition data" designation is set in "
Da.13 Parameter" of the "start block data"
in which "6: FOR condition" is set in "
Da.12 Special start command".)
Section (2) shows a control example where the "start block data" and "positioning data"
are set as shown in section (1).
(1) Setting examples
(a) Start block data setting example
Axis 1 start
block data
Da.10
Shape
Da.11 Start
data No.
Da.12 Special
start command
Da.13
Parameter
1st point 1: Continue 1 6: FOR condition 5
2nd point 1: Continue 10 0: Normal start –
3rd point 0: End 50 7: NEXT start –
* The "condition data Nos." have been set in " Da.13 Parameter".
(b) Positioning data setting example
Axis 1 position-
ing data No.
Da.1
Operation pattern
1 01: Continuous positioning control
2 01: Continuous positioning control
3 00: Positioning complete
10 11: Continuous path control
11 00: Positioning complete
50 01: Continuous positioning control
51 00: Positioning complete
(2) Control examples
The following shows the control executed when the "start block data" of the 1st
point of axis 1 is set as shown in section (1) and started.
<1> Perform the processing of "positioning data No. 1, 2, 3, 10, and 11" of the
axis 1.
<2> Evaluate the condition set in "condition data No. 5" of the axis 1.
*1
Conditions not established Perform the processing of "positioning
data No. 50 and 51", and go to <1>.
Conditions established Perform the processing of "positioning data
No. 50 and 51", and complete the positioning.
*1 The condition is evaluated at the time of change to the point of NEXT start (just
before the positioning control for the point of NEXT start).