Program Examples - Mitsubishi Electric FX3G SERIES Programming Manual
Programmable controllers
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- User manual (532 pages) ,
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FX
/FX
/FX
Series Programmable Controllers
3G
3U
3UC
Programming Manual - Basic & Applied Instruction Edition
35.2.7
Program examples
Examples of single flows
1. Example of flicker circuit
• When the PLC mode is changed from STOP to RUN, the state relay S3 is driven by the initial pulse (M8002).
• The state relay S3 outputs Y000. 1 second later, the ON status transfers to the state relay S20.
• The state relay S20 outputs Y001. 1.5 seconds later, the ON status returns to the state relay S3.
Y000
Y001
1
second
Step
number
1.5
seconds
<Step ladder>
M8002
SET
S3
0
Initial pulse
STL
S3
3
Y000
4
T0
T0
SET
S20
8
STL
S20
11
Y001
12
T1
T1
S3
16
RET
19
END
20
35 SFC Program and Step Ladder
35.2 Step Ladder
<List program>
Step
0
LD
M8002
number
1
SET
S3
3
STL
S3
4
OUT
Y000
5
OUT
T0 K10
8
LD
T0
K10
9
SET
S20
11
STL
S20
12
OUT
Y001
13
OUT
T1 K15
16
LD
T1
17
OUT
S3
19
RET
K15
20
END
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