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• The instructions can be used for a program that detects passage of moving
objects.
After the passage of a product is detected, the next process for the product is
started.
X0
M0
Y70
PLF M0
SET Y70
Sensor
(Detection of input from X0)
Conveyor
Sensor
Product
[Timing chart]
X0
M0
Y70
Other Useful Ways of PLS and PLF
Part 1
• The instructions can be used for a program that executes the output operation for
a set period of time when the input signal changes from on to off.
[Timing chart]
Input
(X0)
Output
(Y76)
Set time limit
10sec.
Pulse duration
[Program example]
Project name QB-6
Program name MAIN
T16
M1
Y76
X0
Y76
M1
PLF
0
3
T16
K100