Mitsubishi Electric FX3G SERIES Programming Manual page 800

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
The figure below shows a step ladder program for selecting the product size and judging products as either accepted
or rejected.
<Step ladder>
M8002
0
Initial pulse
X001 X003 Y001
3
Left Upper
Release
limit limit
7
X026 X007
8
Start Origin
12
13
T0 X002
17
Lower limit (small ball)
T0 X002
21
25
26
30
T1
33
34
T1
38
41
42
T3
43
46
47
X003
48
51
X004 Y004
52
55
X005 Y004
56
59
X004
60
63
X005
64
798
SET S0
Origin
Y007
indication
STL S0
SET S21
STL S21
Moving
Y000
down
T0
K20
SET S22
SET S25
STL S22
Suction
SET Y001
T1
K10
SET S23
STL S25
Suction
SET Y001
T1
K10
SET S26
STL S23
Moving
Y002
up
SET S24
STL S26
Moving
Y002
up
SET S27
STL S24
Moving
Y003
rightward
STL S27
Moving
Y003
rightward
STL S24
SET S30
STL S27
SET S30
67
68
X002
69
72
73
T2
77
80
81
X003
82
85
X001 Y003
86
X001
89
92
93
The ON status is transferred to the recombination state
relay S30 when X004 turns ON in the case of a small product,
or when X005 turns ON in the case of a large product.
When the special auxiliary relay M8040 is driven, all transfers
to any state relay are disabled.
In each of the state relays S24, S27 and S33, an interlock
contact is connected in series respectively to the rightward
movement output Y003 and leftward movement output Y004.
<List program>
0 LD M8002 34
1 SET S0 35
3 LD X001 38
4 AND X003 39
5 ANI Y001 41
6 OUT Y007 42
7 STL S0 43
8 LD X026 44
9 AND Y007 46
10 SET S21 47
12 STL S21 48
13 OUT Y000 49
14 OUT T0 K20 51
17 LD T0 52
18 AND X002 53
19 SET S22 54
21 LD T0 55
22 ANI X002 56
23 SET S25 57
25 STL S22 58
26 Y001
SET 59
27 OUT T1 K10 60
30 LD T1 61
31 SET S23 63
33 STL S25 64
35 SFC Program and Step Ladder
STL S30
Moving
Y000
down
SET S31
STL S31
RST Y001 Release
T2
K10
SET S32
STL S32
Moving
Y002
up
SET S33
STL S33
Moving
Y004
leftward
S0
RET
END
SET Y001 65 SET
OUT T1 K10 67 STL
LD T1 68 OUT
SET S26 69 LD
STL S233 70 SET
OUT Y002 72 STL
LD T3 73 RST
SET S24 74 OUT
STL S26 77 LD
OUT Y002 78 SET
LD X003 80 STL
SET S27 81 OUT
STL S24 82 LD
LDI X004 SET
83
ANI Y004 85 STL
OUT Y003 86 LDI
STL S27 87 ANI
LDI X005 88 OUT
ANI Y004 89 LD
OUT Y003 90 OUT
S24
STL 92 RET
LD X004 93 END
SET S30
STL S27
LD X005
35.2 Step Ladder
S30
S30
Y000
X002
S31
S31
Y001
T2 K10
T2
S32
S32
Y002
X003
S33
S33
X001
Y003
Y004
X001
S0