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MELSEC-Q
10 HIGH-LEVEL POSITIONING CONTROL
10.3.7 Repeated start (FOR condition)
In a "repeated start (FOR condition)", the data between the " block start data" in which
"5: FOR condition" is set in "
Da.13
Special start instruction" and the " block start
data" in which "6: NEXT start" is set in "
Da.13
Special start instruction" is repeatedly
executed until the establishment of the conditions set in the "condition data".
(The "condition data" designation is set in "
Da.14
Parameter" of the " block start
data" in which "5: FOR condition" is set in "
Da.13
Special start instruction".)
Section [2] shows a control example where the " block start data" and "positioning
data" are set as shown in section [1].
[1] Setting examples
(1) Block start data setting example
Axis 1 block
start data
Da.11
Shape
Da.12
Start data No.
Da.13
Special start
instruction
Da.14
Parameter
1st point 1: Continue 1 5: FOR condition 5
2nd point 1: Continue 10 0: Block start –
3rd point 0: End 50 6: NEXT start –
•
•
The "condition data Nos." have been set in "
Da.14
Parameter".
(2) 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 " block start data" of the 1st
point of axis 1 is set as shown in section [1] and started.
<1> Carry out the conditional judgment set in "condition data No. 5" for the axis 1
"positioning data No. 1".
Conditions not established Go to <2>.
Conditions established Go to <3>.
<2> Execute axis 1 "positioning data No. 1, 2, 3, 10, 11, 50, and 51", then go to
<1>.
<3> Execute axis 1 "positioning data No. 1, 2, 3, 10, 11, 50, and 51", then stop
the control.