FX Series Programmable Controllers
Full STL flow diagram/program.
S 0
X12
Y7
S 21
T0
X2
S 22
T1
S 23
X3
S 24
X4
S 30
X2
S 31
T2
S 32
X3
S 33
X1
Start
Zero-point arrival
Lower pickup arm
Y0
K20
T0
Lower limit = small ball
SET Y1
K10
T1
Y2
Raise
pickup arm
Upper limit reached
X4
Y3
Move to small ball bucket
Y0
Lower pickup arm
Lower limit reached
RST Y1
K10
T2
Y2
Raise pickup arm
Upper limit reached
X1
Y4
Return to zero-point
Zero-point reached
This example uses the dot notation to identify
normally open and normally closed contacts.
Normally open contacts
Normally closed contacts
T0
X2
Lower limit = large ball
Collect ball
S 25
T1
S 26
X3
Upper limit reached
S 27
Move to large ball bucket
X5
Release ball
STL Programming 3
Collect
SET Y1
ball
K10
T1
Y2
Raise
pickup arm
X5
Y3
3-19