Information on Drawing Numbers for Traffic Light PLC Program:
1. Red Color Lights in Position A
2. Green color lights in Position A
3. Red Color Lights in Position B
4. Green color lights in Position B
5. Red Color Lights in Position C
6. Green color lights in Position C
7. Red Color Lights in Position D
8. Green color lights in Position D
Number Of Inputs and Output PLC applied :
1. Number Of Inputs PLC is 1 Input :
--- 1 Unit Input for Switch ON/OFF Traffic Light.
--- Total Number Of Inputs PLC is Minimum 1 Input Unit.
2. Number Of Output PLC is 8 Output :
--- 1 Unit Output for Red Color Lights in Position A
--- 1 Unit Output for Green color lights in Position A
--- 1 Unit Output for Red Color Lights in Position B
--- 1 Unit Output for Green color lights in Position B
--- 1 Unit Output for Red Color Lights in Position C
--- 1 Unit Output for Green color lights in Position C
--- 1 Unit Output for Red Color Lights in Position D
--- 1 Unit Output for Green color lights in Position D
--- Total Number Of Outputs PLC is Minimum 8 Output Unit.
Sequence PLC Programming for Traffic Light PLC Program:
Step 1 :
a. If Switch ON/OFF = ON Then System Traffic Light is Active.
b. If Switch ON/OFF = OFF Then System Traffic Light is Inactive.
Step 2 :
a. IF Green color lights in Position A ( No.2) = ON then Red Color Lights in Position B,C, AND D = ON And Timer0 Activated.
b. IF Timer0 = ON then Green color lights in Position C ( No.6) = ON And Red Color Lights in Position A,B, AND D = ON And Timer1 Activated.
c. IF Timer1 = ON then Green color lights in Position D ( No.8) = ON And Red Color Lights in Position A,B, AND C = ON And Timer2 Activated.
d. IF Timer2 = ON then Green color lights in Position B ( No.4) = ON And Red Color Lights in Position A,C, AND D = ON And Timer3 Activated.
e. IF Timer3 = ON then Green color lights in Position A ( No.2) = ON And Red Color Lights in Position B,C, AND D = ON And Timer0 Activated.
f. Continuously to Step 2.b
g. Timer0,1,2,3 set to 2 minutes
Download Simulation Traffic Light :
Please Click : Traffic Light PLC Program
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