Could anyone please check whether my ladder logic diagram is correct or wrong?

Thread Starter

DeathYu

Joined Jun 1, 2010
4
This is my ladder logic diagram assignment.
This is what I need to do.
When the switch is turned on , LED 2 and 3 will light up for 1 second and then it will turn off.
Next, the LED 1 , LED 2 , LED 4 , LED 5 and LED 7 will light up for 1 second then turn off.
Then , LED 1 , LED 2 , LED 4 , LED 3 and LED 7 will light up for 1 second then turn off.
Now , LED 2 and 3 will light up for 1 second and then it will turn off.
Next, the LED 1 , LED 2 , LED 4 , LED 5 and LED 7 will light up for 1 second then turn off.
Lastly ,LED 1 , LED 2 , LED 4 , LED 3 and LED 7 will light up for 1 second then turn off.

Could anyone help me check whether my ladder logic diagram is correct or wrong? Thanks for your help.
This is the image of my ladder logic diagram.
Part 1 is basically about Timer -
T4:0 - 1 second , T4:1 - 2 second , T4:2 - 3 second , T4:3 - 4 second , T4:4 - 5 second and T4:5 - 6 second


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Part 2 is about circuit using Timer to control the LED


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