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2. Procedure3. Equipments list4. Result5. Conclusions

OBJECTIVE- To test the functionality of the program by representationin LAD.

PROCEDURE1. Equipments such as CPU PLC and USB cable has been

taken and connected to the computer.2. The PLC wiring has been drawn.3. After that, the schematic diagram has been converted to

PLC diagram. The program has been written in LAD.

4. Next, SIMATIC MANAGER program has been opened andsetup on the computer.

5. Then, the program has been setup in LAD first. The LADdiagram has been written in computer.

6. Next, the program has been downloaded into the PLCmonitor with the monitor in STOP switch condition.

7. After that, the monitor has been changed to the RUNswitch condition. Then, the functionality of the programhas been tested.

EQUIPMENT LIST

(Computer) (USB cable)

(CPU PLC) (Lamp)

TASK 7

2

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K1

S

S

K

MEMORY FUNCTION

SET Priority / Dominant SET

RESET Priority / Dominant RESET

SET Priority / Dominant SET

LAD diagram & MEMORY FUNCTION diagram

=

RESULT

3

LADdiagram

MEMORY FUNCTIONdiagram

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K1

S

S

K

Normal ViewNo action has happen.

S1 PressK is active when S1 is press.

S2 PressK is not active when S2 is press.

RESET Priority / Dominant RESET

4

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Programming LAD

=

RESULT

5

MEMORY FUNCTIONdiagram

LADdiagram

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Normal ViewNo action has happen.

S1 PressK1 is not active when S1 is press.

S2 PressK1 is active when S2 is press.

TASK 7.2

S1 Red (L1)S2 Yellow (L2)S3 Green (L3)S4

6

LADia ram

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Working Operation:

S1 activate Red lamp ON.S2activate Red lamp OFF & ON.

S3 activate Yellow lamp OFF & Green lamp isON.

S4 activate System shut down.Press S1, S2, and S3 again then since S3 is press, re-press S1,S2, and S3 to make the cycle operation. Then press S4 to shutdown the program.

1) Timetable:

Symbol Description AddressS1 P/b NO E124.0S2 P/b NO E124.1S3 P/b NO E124.2S4 P/b NC E124.3L1 Red A124.0

L2 Yellow A124.1L3 Green A124.2

2) Wiring diagram in PLC

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3) LAD diagram

4) Result

PLC

S1 S2S3

24V

0V

L1 L3L2

S4

8

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Normalview:For normal view, all of lamps areoff.Noactionhashappens.S1,S2,S3andS4arenot ress et.

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S1press:

When S1 (E124.0) is press, memory

SRfunctionwill startto set and L1

(A124.0)willon.

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S2press:When S2 (E124.1) is press, memory SRfunction will start to set and L2 (A124.1)will ON at the same time L1 (A124.0) isOFF.IthappensbecauseL2 wasresetthe

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S3press:

WhenS3(E124.2) ispress,memorySR

function will start to set and

L3

(A124.2) will ON atthe sametime L2

(A124.1) isOFF.IthappensbecauseL3

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The program will start again with press S1, S2, S3 and thenpress S1, S2, S3 again continuously. Press S4 to shut down theprogram.

CONCLUSION

The working operation is same either use the LADprogramming or MEMORY FUNCTION programming.The easy to use is MEMORY FUNCTION programmingbecause it saves time to create it and also save thespace in build the network to draw the diagram.

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S4press:When S4 (E124.3) is press, allmemory SRfunctionwill start to reset.All of lamp L1,L2,L3willOFF.Theprogramisshutdown.

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When we press SET, the program will set the lampwill ON. Then, when we press RESET, the programwill reset the lamp will OFF.

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