a traffic light control system using programmable logic controller
TRANSCRIPT
![Page 1: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/1.jpg)
Industrial and Automation System 2016
1
![Page 2: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/2.jpg)
Our Goals
2
The final target is to design a PLC controller in order to:
● Perform a simulation of a control of a traffic light road system;
● Learn the use of Twido PLC model TWDLCAA16DRF;
● Learn the use of TwidoSoft software.
![Page 3: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/3.jpg)
History: a traffic light system
3
![Page 4: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/4.jpg)
4
Programmable Logic Controller (PLC)
Characteristics:
![Page 5: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/5.jpg)
5
Programmable Logic Controller (PLC)
Characteristics(2):
![Page 6: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/6.jpg)
6
PLC: Block Diagram
![Page 7: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/7.jpg)
7
Twido PLC: Power Supply
● The Phase and Neutral references
have been connected to the
electrical system from 100 to 240
Vac.
● The ground connection in general
will not be connected to anything
because the PLC itself already has
an electrical reference.
![Page 8: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/8.jpg)
8
Twido PLC: Input
Three distinct and separate
regions:
● The first two contacts, DC OUT,
provide an internal power supply
of +24V at 150 mA and another
one of 0 Vcc, used to power the
inputs or outputs;
● The third contact, DC IN, is used
to supply the inputs and
determine the Positive or
Negative logic;
● The remaining 9 contacts (0 to 8)
connect various inputs device;
![Page 9: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/9.jpg)
9
Twido PLC: Output
Three distinct and separate regions:
RED: Locate the contacts of outputs 0 to
3;
GREEN: Locate the output contacts 4
and 5;
BLUE: Locate the output pin 6.
Ry COM0, 1 and 2 are used, by connecting
a power supply, to power corresponding
outputs.
![Page 10: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/10.jpg)
10
Twido PLC: at the top
Status LEDs :
● Input (0 to 8)
● Output (0 to 6)
● Run
● Power
● Error
![Page 11: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/11.jpg)
11
Twido PLC: Interfacing
![Page 12: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/12.jpg)
12
TwidoSoft: Main window
![Page 13: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/13.jpg)
13
TwidoSoft: Ladder Viewer window
![Page 14: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/14.jpg)
14
TwidoSoft: Ladder Editor window
![Page 15: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/15.jpg)
15
Traffic Lights Control System(TLCS) prototype
Thanks the support of
Fablab Messina we created
a prototype of TLCS that
we used in combination
with the PLC.
This prototype allow us to
give an output to the logic
implemented by using the
PLC.
![Page 16: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/16.jpg)
16
Main Activities
(1) PCB (printed circuit board): design and creation
(2) Traffic Lights: design and creation
(3) Packaging: design and creation
(4) Final Prototype: assembling and testing
![Page 17: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/17.jpg)
17
(1)PCB (printed circuit board): design and creation
PCB design with KiCad-EDA
convert Kikad-EDA to TIFF
setting laser cut software tool
painting of the copper plate
laser cutting of the painted copper plate
engraving the copper plate with the FeCI3
cleaning the copper plate with a solvent
making holes on the final PCB
component soldering on the final PCB
![Page 18: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/18.jpg)
18
PCB design with KiCad-EDA
KiCad-EDA (http://kicad-pcb.org/ ), a cross platform and open source electronics design automation suite
![Page 19: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/19.jpg)
19
convert Kikad-EDA to TIFF
![Page 20: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/20.jpg)
20
setting laser cut software tool
Software's Graphical User
Interface that controls the
laser cutting tool.
![Page 21: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/21.jpg)
21
covered the copper plate using black paint
![Page 22: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/22.jpg)
22
laser cutting of the painted copper plate
![Page 23: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/23.jpg)
23
engraving the copper plate with the FeCI3
To engraving the copper
plate, we used a corrosive
liquid, the ferric chloride
(FeCl3), often inaccurately
called "acid."
We put the ferric chloride in
a plastic container and we
immersed the copper plate
for some minutes.
![Page 24: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/24.jpg)
24
cleaning the copper plate with a solvent
![Page 25: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/25.jpg)
25
final PCB
![Page 26: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/26.jpg)
26
making holes on the final PCB
![Page 27: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/27.jpg)
27
component soldering on the final PCB
![Page 28: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/28.jpg)
28
(2) Traffic Lights: design and creation
Traffic Light design with Tinkercad
Traffic Light 3D printing session
Making holes on the Traffic Light 3D printed
![Page 29: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/29.jpg)
29
Traffic Light design with Tinkercad
Tinkercad is a simple,
online 3D design and 3D
printing app for everyone.
https://www.tinkercad.com/
![Page 30: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/30.jpg)
30
Traffic Light 3D printing session
Then we did two 3D
printing sessions. Each
session we printed two
Traffic Light.
The duration of the single
3D printing session was 2
hours and 10 minutes.
![Page 31: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/31.jpg)
31
making holes on the Traffic Light 3D printed
![Page 32: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/32.jpg)
32
attach diode LEDs inside each Traffic Lights printed
![Page 33: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/33.jpg)
33
(3) Packaging: Design and Creation
Packaging design of the TLCS prototype
Record a sheet of plexiglass using the laser cutting tool
Cut a sheet of polycarbonate using the cutting tool
![Page 34: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/34.jpg)
34
packaging design of the TLCS prototype
![Page 35: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/35.jpg)
35
record a sheet of plexiglass using the laser cutting tool
![Page 36: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/36.jpg)
36
cut and engrave a sheet of polycarbonate using the cutting tool
![Page 37: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/37.jpg)
37
(4) Final Prototype: assembling and testing
Assembly all the components to create the final packaging
Solder wires with the PCD and testing phase.
![Page 38: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/38.jpg)
38
assembly all the components to create the final packaging
![Page 39: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/39.jpg)
39
Solder wires with the PCD and testing phase
![Page 40: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/40.jpg)
40
Traffic Lights Control System(TLCS) prototype
See you in Rome next October !!!
![Page 41: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/41.jpg)
41
TLCS I/O prototype interface
GND 5V NULL
back
pedestrian
sx
pedestrian front
![Page 42: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/42.jpg)
42
Architecture
2 1
3 4
![Page 43: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/43.jpg)
43
Architecture: Three PLC System
![Page 44: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/44.jpg)
44
Logic connections between master and slaves PLC
Master Slave 1 outputs Slave 2 outputs
000 → OFF state
001 → Night state 1* , 4*
010 → Red A, Green B 0, 5, 6 4, 0, 3
011 → Red B, Green A 3, 2 6, 2, 1, 5
100 → Yellow A, Red B 1, 3 1**, 2, 5**, 6
101 → Yellow B, Red A 4, 0, 6** 3**, 0, 4
110 → Sunday (LTZ)
Green B
6 4,0,3
111 → Sunday (LTZ)
Green A
5, 6, 2,1
only bicycle and pedestrian
traffic without yellow state
**: Lamp %S5 time base 100 msecs
LTZ: Limited Traffic Zone.
*: Lamp %S6 time base 1 sec
![Page 45: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/45.jpg)
Master PLC
● %Q0.0, %Q0.1, %Q0.2:
command bit.
● %Q0.3: buzzer n. 1.
● %Q0.4: buzzer n. 2.
● %Q0.5: buzzer n. 3.
● %Q0.6: buzzer n. 4.
45
● %I0.0 Input to enable Daytime mode
● %I0.1 Input to enable Sunday mode
● %I0.5 reservation Push Button n. 1
● %I0.6 reservation Push Button n. 2
● %I0.7 reservation Push Button n. 3
● %I0.8 reservation Push Button n. 4
![Page 46: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/46.jpg)
46
15 secs 5 secs 10 secs 5 secs
Block Diagram for Daytime behavior crossroad A/B
![Page 47: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/47.jpg)
Daytime Mode
47
![Page 48: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/48.jpg)
48
Master PLC - DRUM Programmer
000 configuration - all led are
switched off.
Reset leds during scenarios
variation.
DayTime no-Sunday
Red A, Green B
Yellow B
Red B, Green A
Yellow A
every 5 secs
![Page 49: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/49.jpg)
49
Nighttime Mode
001 → Night state NightTime no-Sunday
A-B Direction
![Page 50: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/50.jpg)
50
Reservation Mode
simulate button push along B Direction
simulate button push along A Direction
buttons n. 2 - 4
buttons n. 1 - 3
![Page 51: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/51.jpg)
51
Reservation Mode
Green B AND Reservation B Direction
Green A AND Reservation A Direction
buzzer n. 2
buzzer n. 4
buzzer n. 3
buzzer n. 1
![Page 52: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/52.jpg)
100 → Yellow A, Red B
52
Reservation Mode
direction A - pedestrian reservation
0.5’’
![Page 53: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/53.jpg)
53
101 → Yellow B, Red A
direction B - pedestrian reservation
0.5’’
Reservation Mode
![Page 54: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/54.jpg)
54
Sunday Mode
Time base: 1 min
1
1
0
1
1
1
110 Green B
111 Green A
30 secs
30 secs
![Page 55: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/55.jpg)
55
Architecture of Slaves PLC
Output PLC Slave 1 PLC Slave 2
0 RcA RpA
1 YcA GpA
2 GcA RpB
3 RcB GpB
4 YcB RbA
5 GcB GbA
6 GbB RbB
Where:
● RcA, RpA, RbA are respectively the red lights of car, pedestrian, bicycle
in A direction;
● GcA, GpA, GbA are respectively the green lights of car, pedestrian, bicycle
in A direction;
● RcB, RpB, RbB are respectively the red lights of car, pedestrian, bicycle
in B direction;
● GcB, GpB, GbB are respectively the green lights of car, pedestrian, bicycle
in B direction;
● YcA, YcB are respectively the yellow lights of car along A and B direction;
![Page 56: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/56.jpg)
56
Slave 1 PLC
● %I0.0, %I0.1, %I0.2 Input coming from
the output of Master as command
001 → Night state
010 → Red A, Green B
011 → Red B, Green A
100 → Yellow A, Red B
101 → Yellow B, Red A
110 → Sunday Green B
%Q0.0,
%Q0.1
%Q0.2
%Q0.3
%Q0.4
%Q0.5
CAR along A-B direction
%Q0.6
A
B
B
![Page 57: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/57.jpg)
57
COMMAND 010
TURN O
N
TURN O
FF
Slave 1 PLC - Red A, Green B
![Page 58: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/58.jpg)
58
COMMAND 101
TURN O
N
TURN O
FF
Slave 1 PLC - Red A, Yellow B
![Page 59: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/59.jpg)
59
COMMAND 011
TURN O
N
TURN O
FF
Slave 1 PLC - Red B, Green A
![Page 60: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/60.jpg)
60
COMMAND 100
TURN O
N
TURN O
FF
Slave 1 PLC - Yellow A, Red B
![Page 61: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/61.jpg)
61
TURN O
N
TURN O
FF
COMMAND 001
0.5’’
Slave 1 PLC - NightTime
![Page 62: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/62.jpg)
62
TURN O
FF
COMMAND 111
Slave 1 PLC - Sunday Time, Reset
![Page 63: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/63.jpg)
63
TURN O
FF
COMMAND 110
TURN O
N Slave 1 PLC - Sunday Time
![Page 64: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/64.jpg)
64
Slave 2 PLC
● %I0.0, %I0.1, %I0.2 Input coming
from the output of Master as
command
010 → Red A, Green B
011 → Red B, Green A
100 → Yellow A, Red B
101 → Yellow B, Red A
110 → Sunday Green B
111 → Sunday Green A
%Q0.0
%Q0.1
%Q0.2
%Q0.3
Pedestrian lights
%Q0.4
%Q0.5
%Q0.6
A
B
A
B
![Page 65: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/65.jpg)
65
COMMAND 010
TURN O
N
TURN O
FF
Slave 2 PLC - Red A, Green B
![Page 66: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/66.jpg)
66
COMMAND 101
TURN O
N
TURN O
FF
Slave 2 PLC - Red A, Yellow B
0.05’’
![Page 67: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/67.jpg)
67
COMMAND 011
TURN O
N
TURN O
FF
Slave 2 PLC - Red B, Green A
![Page 68: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/68.jpg)
68
Slave 2 PLC - Yellow A, Red B
COMMAND 100 TURN O
N
TURN O
FF
0.05’’
![Page 69: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/69.jpg)
69
Slave 2 PLC - LTZ, Green B, Red A
COMMAND 110
TURN O
N
TURN O
FF
![Page 70: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/70.jpg)
70
Slave 2 PLC - LTZ, Green A, Red B TURN O
N
TURN O
FF
COMMAND 111
![Page 71: A TRAFFIC LIGHT CONTROL SYSTEM USING PROGRAMMABLE LOGIC CONTROLLER](https://reader031.vdocuments.site/reader031/viewer/2022020301/58d1e4041a28ab51448b47a5/html5/thumbnails/71.jpg)
71
GRAZIE PER L’ATTENZIONE