Mitsubishi Electric MELSEC FX3U Programming Manual page 847

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
2. Example of fountain control
1) Cyclic operation (X001 = OFF, X002 = OFF)
When the start button X000 is pressed, the outputs turn ON in the order "Y000 (wait indication) → Y001
(center lamp) → Y002 (center fountain) → Y003 (loop line lamp) → Y007 (loop line fountain) → Y000
(wait indication)", and then the outputs return to the wait status.
Each output is switched in turn every 2 seconds by a timer.
2) Continuous operation (X001 = ON)
Y001 to Y007 turn ON in turn repeatedly.
3) Stepping operation (X002 = ON)
Every time the start button is pressed, each output turns ON in turn.
<Step ladder>
M8000
0
RUN monitor
X002 X000
3
Stepping
Start
M8002
7
Initial pulse
10
11
X000
12
Start button
15
16
T1
20
23
24
T2
28
31
32
T3
36
39
40
T7 X001
44
T7 X001
48
52
53
Enable
STL
M8047
monitoring
STL
M8040
transfer
disable
Initial state
SET S3
relay
STL S3
Wait
Y000
indication
SET S20
STL S20
Y001
Center lamp
T1
K20
SET S21
STL S21
Center
Y002
fountain
T2
K20
SET S22
STL S22
Loop line
Y003
lamp
T3
K20
SET S27
STL S27
Loop line
Y007
fountain
T7
K20
S20
Continuous
S3
Cyclic/stepping
RET
END
35 SFC Program and Step Ladder
35.2 Step Ladder
<List program>
0 LD M8000
1 OUT M8047
3 LD X002
4 ANI X000
5 OUT M8040
7 LD M8002
8 SET S3
10 STL S3
11 OUT Y000
12 LD X000
13 SET S20
15 STL S20
16 OUT Y001
17 OUT T1 K20
20 LD T1
21 SET S21
23 STL S21
24 OUT Y002
25 OUT T2 K20
28 LD T2
29 SET S22
31 STL S22
32 OUT Y003
33 OUT T3 K20
36 LD T3
37 SET S27
39 STL S27
40 OUT Y007
41 OUT T7 K20
44 LD T7
45 AND X001
46 OUT S20
48 LD T7
49 ANI X001
50 OUT S3
52 RET
53 END
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35
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38
A
B
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