1. LG PLC COURSE Beginner Prepared by : -Hossam Mohammed -Ramdan said
Designed by : -Hossam Mohammed

2. LG module XGB-XGBCE

3. Lecture (1) Plc history & automatic control (classic) .
Advantages of PLC.
Basic PLC operation.
Analog VS Digital.
Inputs and outputs.
PLC inside view.
Over view .

4. Plc history & automatic control (classic)
Classic control revision
Over view about plc history
In the 1960's Programmable Logic Controllers were first developed to replace relays and relay control systems.
In 1973 the ability to communicate between PLCs was added.
The 90's increased the collection of ways in which a PLC could be programmed (block diagrams, instruction list, C, etc.). They also saw PLCs being replaced by PC's in some cases.
However, PLCs are still very much in use in all sorts of industries, and it's likely that they will remain there for quite some time.

5. Some Advantages of PLC More complex tasks can be done with a PLC .
Wiring between devices and relay contacts is done in the PLC program .
Smaller physical size than hard-wire solutions.
PLCs have integrated diagnostics and override functions.
Applications can be immediately documented.
Applications can be duplicated faster and less expensively.

6. Basic PLC operation

7. Example
Pushbuttons , in this simple example, connected to PLC inputs, can be used to start and stop a motor connected to a PLC through a motor starter .

8. Analog VS Digital Analog Digital Signal
Analog signal is a continuous signal which represents physical measurements.
Digital signals are discrete time signals generated by digital modulation.
Waves
Denoted by sine waves
Denoted by square waves
Example
Human voice , measuring variable values , percentage opening closing devices .
Computers, CDs, DVDs, open close devices
0—1 complete open or close .
Uses
Can be used in analog devices only.
Computing and digital electronics
application
Heat sensors , valves control , any physical sensor in general .
Limit switches , any 0—1 application , computing .

9. Inputs and outputs Input Output Definition
It comes from sensors that translate physical phenomena into electrical signals.
It allows a PLC to cause something to happen in a process.
Types
Ac , dc sourcing and sinking input .
Mechanical relays or static relays ( electronics ) .
Examples
Proximity Switches , Switches ,
Potentiometer .
Solenoid valves , Lights , Motor Starters ,
Servo Motors .
Physical exist in PLC
In smaller PLCs the inputs are normally built in and are specified when purchasing the PLC.
For larger PLCs the inputs are purchased as modules, or cards, with 8 or 16 inputs of the same type on each card.
In smaller PLCs the outputs are normally built in and are specified when purchasing the PLC.
For larger PLCs the outputs are purchased as modules, or cards, with 8 or 16 outputs of the same type on each card.

10. Input discrete technique
Opto-isolator
converter
Terminal 1
Input (switch, sensor,…)
CPU
common
Input module point

11. Output discrete technique
Load
Terminal 1
Input logic
Opto-isolator
Converter
Trigger control
CPU
Output module point

12. PLC inside view

13. Over view ?
Any question ?

14. Lecture (2) Program execution method. XBC Hardware and wiring .
Programming methods of PLC.
Ladder logic on digital concepts.
Function block over view.
XG5000 software.
Some examples.
Over view .

15. Program execution method

16. XBC Hardware
hardware of XBC PLC Economic type 3 8 7 11 1 6 10 5 2 9 4

17. B A C k

18. XBC wiring
Input wiring

19. Relay output wiring

20. Transistor output wiring

21. Programming Methods of PLC
ladder logic .
Function Block Diagram .
Sequential Function Chart .
Structured Text .
Instruction List .

22. Ladder logic concepts
Ladder logic is the main programming method used for PLCs

23. Ladder examples
Two conditions to run one coil

24. MOTOR START WITH LATCH

25. MOTOR START WITH Set\Reset

26. Function block Over view
Simply function block uses logic gates instead of ladder
Examples

28. Relation between ladder and blocksOr
Not
Nand
Nor
Example ladder to blocks

29. XG5000 software

30. Start new project

31. Keyboard Shortcuts

32. XG5000 Short-Cuts

33. Connect to plc hardware

34. Some examples
Auto Garage entrance door with latch

35. The same example with set

36. Over view
Any Question ?

37. Lecture (3) Refreshment . Plc small example and hardware run .
Marker .
Positive edge .
Negative edge .
Timer on .
Timer off .
Mono-stable timer .
Can you imagine .
Home work :D .
Over view .

38. Refreshment
plc
Input
Output
ladder
Hardware

39. Plc small example and hardware run
3 pumps with three level sensor and one valve
3 pumps auto run .. when sensor 1 read 2 pumps only run and stop the third one …. when the second sensor read only one pump run …. when the third sensor read all pumps off and the valve run till the tank be empty and again ….

40. Marker
It’s a coil inside plc to help me to make more latches and more functions like on last example put start push button

41. Positive edge Negative edge
It help you to take a pulse
take some examples
For example to make one push button use to open and close lamp from one place or from more than one place the program will be like that
but this impossible and have a problem

42. Positive edge

43. Negative edge

44. Timer on

45. Timer off

46. Mono-stable

47. Can you imagine
Every one say example and we’ll choose the best one and do it

48. Home work
Lifter for three floors with stop button at worst case and buzzer button for help
Use 6 sensors ,5 push button and two limit switch
The motor must be slow before stop in wanted floor

49. Any question ???? Please ask :D
Over view
Any question ????
Please ask :D

50. Lecture (4) Try the 3 pumps example on plc hardware .
Try more examples from your suggestion and imagination .
Lifter homework revision .
Any question about anything we have finished it till this moment .

51. Lecture (5) Counters . Counter up Counter down Counter up/down
Counter ring
Lifter if you want .
Your examples .
Try your example on plc module .
Any questions .

52. Counter up
Use to up counting from 0 to any value you enter … when reach this value relay on ….. To reset it to zero put button with reset coil to reset counter to zero

53. Counter down
Use to down counting from the value you entered to zero ….. Reset like up

54. Counter up/down
Use two input one for up counting and another one for down counting ….. It count in the range you entered ….. Reset like up and down

55. Counter ring
Like up counter with option auto reset after finishing counting

56. Lifter ????????????
Floor 2
Floor 1
Floor 0
Slow
stop
slow

57. Give me your examples

58. Any question?