plc report - unikl msi

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)



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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Figure 1: Circuit in normal condition

Figure 1: when S1 trigger ON



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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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S1 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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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



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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.

plc report - unikl msi

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