KEYENCE SR-700 Series - Manual (Page 9)

9 E SR SCRIPT RM
4-2
Repeat process
This section describes processes when repeating processes.
while sentence
while sentences perform repeat process by specifying continuation conditions.
Format
for sentence
for sentences repeat process using the counter to count the number of repetitions.
Format
z Base
z Specifying "increment of counter"
while continuation
condition do
As long as the continuation condition is fulfilled, the process is
repeated.
If the continuation condition is not fulfilled, the repeat process
ends.
Process
end
Example
while (i<=10) do
If i is 10 or less, the value for i is increased by one.
i = i+1
end
for Initialization expression for counter,
and final value do
• Sets the default value to the counter
(variable). The process is repeated until
the value exceeds the final value.
• Each time the process ends, the counter
increases by one.
Process
end
for Initialization expression for counter, final value
and increment of counter do
• Sets the default value to the counter
(variable). The process is repeated until
the value exceeds the final value.
• Each time the process ends, the counter
increases by positive and negative integer
value specified. Process
end
Example
for i=1,5 do
If i is 5 or less, the value for a is increased by two.
a=a+2
end
Continuation condition
Process
Yes
No
Final value of counter >= counter
Initialization of
Yes
No
Process
Addition of counter
repeat until sentence
repeat until sentences execute process at least once. After the last condition is
checked, whether to repeat is judged.
Format
break sentence
Use break when going out in the middle of repeat process of while sentences or of
for sentences.
Format
* break can be written only just before end.
To call break in the middle of the sentence, write as below.
repeat • After the process is executed once, the process is repeated
until the condition is fulfilled.
Process
until condition
Example
repeat
Regardless of the i value, the value for a is increased by two,
and the value for i is increased by one.
If i is 10 or less, the value for a is increased by two.
a=a+2
i = i+1
until (i<=10)
while continuation
condition do
Conditional expression
Process
break
end
end
Example
do
break
end
Continuation condition
Process
Yes
No
No
Conditional expression