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8/9/2019 PLC Report - Unikl Msi
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OBJECTIVES
This report will be used to demonstrate the students ability to
understand hows the PLC functional.
To interpret the students hows to write program representation.
Hows to use the software that combined with PLC.
EQUIPMENT
1. PLC.
2. USB wire connection PLC and computer.
3. Power supply to the PLC.
4. Computer.
5. Simatic Manager ( PLC Programming Software)
6. Lamp
PLC (siemens 314-IFM)
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Computer (software SIMATIC MANAGER)
SCHEMATIC DIAGRAM
1. SR memory 2. RS memory
S1 Switch 1 (normally open)
S2 Switch 2 (normally close)
K2 Relay
2. 3 Lamp Operation
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S1 Switch 1 (open and close)
S2 Switch 2 (open and close)
S3 Switch 3 (open and close)
S4 Switch 4 (stop button)
K1 Relay (normally open)K2 Relay (normally open)
K3 Relay (normally open)
PLC PROGAMMING
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Task 1: SR memory
LAD (Ladder Diagram)
Figure 1: normal condition
Figure 2: SW 1 trigger ON
FBD (Function Block Diagram)
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STL (Statement List)
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Explanation: Assume switch 1 (S1) E124.0, switch 2 (S2) E124.1, and
output devices (lamp) A124.0. When we trigger on the S1 the lamp will turnon and the automatically the circuit in latching mode (holding mode). When
we trigger S2, all electric current will cut off and lamp will turn off.
RESULT
Switch 1 Switch 2 Relay Output device
0 1 0 0
1 0 1 1
0 0 0 0
Task 2: RS memory
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LAD (Ladder Diagram)
Figure 1: Circuit in normal condition
Figure 1: when S1 trigger ON
FBD (Function Block Diagram)
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STL (Statement List)
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RESULT
Switch 1 Switch 2 Relay Output device
0 1 0 0
1 0 1 10 0 0 0
Explanation:
We assume E124.2 is switch button 1 (S1), E124.3 is switch button
2 (S2), and output device (lamp) is A124.2. RS memory is opposite
of SR memory. If we trigger on S1, the lamp will turn ON in
latching mode (holding mode). Then when we trigger S2, all
electricity in the circuit will cut off and the lamp will turn off. The
concept of RS memory same like SR memory. But the difference
of this two memory is the location to trigger on or off the output
devices.
Task 3: 3 Lamp Operations
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LAD (Ladder Diagram)
S1 in normal condition
S2 in normal condition
S3 in normal condition
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When S1 trigger ON
When S2 trigger ON
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When S3 trigger ON
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FBD (Function Block Diagram)
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STL (Statement List)
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RESULTRed
Lamp
Yellow
Lamp
Green
Lamp
Switch 1 0 1 0 0 0
Switch 2 0 0 1 0 0
Switch 3 0 0 0 1 0
Switch 4
(close)1 1 1 1 0
Relay 1
(open) 0 1 0 0 0
Relay 2
(open)0 0 1 0 0
Relay 3
(open)0 0 0 1 0
Output device 0 1 1 1 0
Switch 1
(close) 1 0 1 1 1
Switch 2
(close)1 1 0 1 1
Switch 3
(close)1 1 1 0 1
Task 3 Explanation:
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We assume that E124.1 is S1, E124.2 is S2, E124.3 is S3, and the
output device for red lamp is A124.4, yellow lamp is A124.5, and
green lamp is A124.6 and the Stop button is E124.0. When we
trigger ON the S1, all the output device (yellow and Green lamp)
will turn off. Then when we trigger ON S2, all the output device(red and green lamp) will turn off. Lastly, when we trigger ON the
S3, the Red and yellow lamp will turn off. This is because there
have connection between these lamps to make only one lamp will
turn ON in one time. When we trigger on Stop button, all the lamp
and all the electricity in this circuit will turn off and cut out
Task 4: SR MEMORY (3 Lamp Operations)LAD (Ladder Diagram)
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When S1 in normal condition
When S1 Trigger on
When S2 in normal condition
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When S2 trigger on
When S3 normal condition
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When S3 in trigger on
FBD (Function Block Diagram)
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STL (Statement List)
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RESULT
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trigger ON the S1, all the output device (yellow and Green lamp)
will turn off. Then when we trigger ON S2, all the output device
(red and green lamp) will turn off. Lastly, when we trigger ON the
S3, the Red and yellow lamp will turn off. This is because there
have connection between these lamps to make only one lamp willturn ON in one time. When we trigger on Stop button, all the lamp
and all the electricity in this circuit will turn off and cut out.
Conclusion for Task 4:
At the last of this task, we can be able to differentiate the
advantage of uses traditional type or PLC. From this task, we also
can know the easiest way to do holding mode (latching mode) in aPLC circuit such as RS and SR memory function and from this
task, we can be able to do cross section circuit. Mean 1 lamp will
operate in one time in lathing circuit.