PLC Assignments on Counter
Assignment 1:-
An output is ON if the input counter counts a value less than 11 or more than 21.
Assignment 2:-
A light is to be ON only if a plc counter has a value either equal to 15 or 28.
Assignment 3:-
An indicating light is to go on when a counter reaches 17.The light is then to go off when a count of 24 reaches.
Assignment 4:-
An indicating light is to go on when a count reaches 23.The light is then to go off when a count of 31 reaches.
Assignment 5:-
A light is to be ON if a plc counter does not have a value either 19 or 23.
Assignment 6:-
A light is to be ON if a plc counter does not have a value either 13 or 21.
Assignment 7:-
An output is ON if the input counter counts a value less than 12 or more than 23 but if it counts19 then also the out put is ON.
Assignment 8:-
An output is to be ON if the input counter is in between 16 and 28.The count value includes 16 and 28.
Assignment 9:-
When a plc counter counts the counting value of 11 then an out put should off which is previously on and remains in off condition for any value more than 11.
Assignment 10:-
An output is ON if the input counter counts a value less than 19 or more than 21 but if the count is 23 the out put is also ON.
Assignment 11:-
When a plc counter counts the counting value of 17 then an out put should off which is previously on and remains in off condition for any value more than 17.
Assignment 12:-
A machine M is turned on either when counter C1 goes up to 11 or when counter C2 goes up to 16.One stop button or switch reset the entire process.
Assignment 13:-
When 3 men comes inside a room the bulb B1 gets on and remains on with a condition that there is no one present previously in the room.
Assignment 14:-
In an air and 1.5 ton. When a man comes inside the room,1 ton condition (AC) room there are two air conditioners of 1 ton AC gets started when 5 men comes inside the room“` 1 ton AC gets off and 1.5 ton AC gets started.
Assignment 15:-
There are two conveyers each with sensors to count I/P and O/P of part entering and leaving the conveyer. There are three indicating lights (white, green, blue) for the process as follows:-
Number of parts on the conveyer1 is equal to conveyer 2, so that white light will glow.
Number of parts on the conveyer 1 is greater than conveyer 2, so that green light glows.
Number of parts on the conveyer 2 is greater than conveyer 1, so that blue lamp glows.
Assignment 16:-
An out put indicator is to go on when six part of C and eight part of D are on of a conveyer.S2 and S3 are proximity Sensors that pulses on when a part goes by them, S2 proximity Sensor refers to C, S3 proximity Sensor refers to D .The process is repeated When S1 proximity Sensor kept ON. When S1 proximity Sensor is released (OFF) the total process stops.
Assignment 17:-
Cars are passing in a tunnel continuously .When S1 sensor senses a car B1 glows till the number of cars passing through S1 is not equal to cars passing through S2. B2 glows till the number of cars passing through S2 is not equal to cars passing through S3.Then B2 gets off when all the cars passed through S3.
Assignment 18:-
When a metallic sensor senses a metal piece it makes an out put ON. When the same sensor again senses an other metal piece it makes the same output OFF
Assignment 19:-
After a count of 15 objects from a sensor a paint spray is to run for 25 seconds. The count of the object and the running of spray machine should run automatically when a start switch is made On. After running of spray machine for 25 seconds the counter should start counting from begining.The objects are coming within a fraction of 1 second.
Assignment 20:-
In a packaging conveyer when a start switch is made ON after counting a packets of 5 , an out put gate(G1) gets opened and remains in open condition .When it counts 10 another output gate (G2) gets on. After G2 gets on both the gates should remain on for 5 second. After 5 second the counting and the opening of gate should repeat automatically.
Assignment 21:-
When 12 men comes inside a room the bulb B2 gets on and remains on with a condition that there are 9 men present previously in the room with a bulb B1 glowing.
Assignment 22:-
Develop a ladder network for automatic counter. When a start switch is made ON the counter will count up to 15 automatically and after counting 15 the counter will automatically reset and starts counting from 0 again.
This function goes on repeatedly as many times you want.
This function goes repeatedly unless the start switch is made OFF. When counter counts 20 each time an output indicator should get ON.
Assignment 23:-
When 5 trucks come outside a factory an indicator should buzz. When all the trucks come outside the factory exit gate should close with a condition that there are 10 trucks present previously inside the factory.
Assignment 24:-
Develop a lad such that when a push button is pressed and released an out put gets ON. When the same push button is again pressed and released the same out put gets OFF.
Assignment 25:-
In an air condition (AC) room there are two air conditioners of 1 ton and 1.5 ton. When a man comes inside the room,1 ton AC gets started when 5 men comes inside the room 1 ton AC gets off and 1.5 ton AC gets started.
Assignment 26:-
There are two conveyers each with sensors to count I/P and O/P of part entering and leaving the conveyer. There are three indicating lights (white, green, blue) for the process as follows:-
Number of parts on the conveyer1 is equal to conveyer 2, so that white light will glow.
Number of parts on the conveyer 1 is greater than conveyer 2, so that green light glows.
Number of parts on the conveyer 2 is greater than conveyer 1, so that blue lamp glows.
Assignment 27:-
Cars are passing in a tunnel continuously .When S1 sensor senses a car B1 glows till the number of cars passing through S1 is not equal to cars passing through S2. B2 glows till the number of cars passing through S2 is not equal to cars passing through S3.Then B2 gets off when all the cars passed through S3.
Assignment 28:-
When a metallic sensor senses a metal piece it makes an out put ON. When the same sensor again senses another metal piece it makes the same output OFF
Assignment 29:-
After a count of 15 objects from a sensor a paint spray is to run for 25 seconds. The count of the object and the running of spray machine should run automatically when a start switch is made on. After running of spray machine for 25 seconds the counter should start counting from beginning .The objects are coming within a fraction of 1 second.
Assignment 30:-
In a packaging conveyer when a start switch is made ON after counting a packets of 5,an out put gate(G1) gets opened and remains in open condition .When it counts 10 another output gate (G2) gets on. After G2 gets on both the gates should remain on for 5 second. After 5 second the counting and the opening of gate should repeat automatically.
Assignment 31:-
When 997 numbers of packets passes on a conveyer bulb B1 gets ON and remains ON. When 1002 number of packets passes on the same conveyer another bulb B2 gets ON which makes B1 OFF and when 1003 number of packet passes on the conveyer counter resets to 0 and B2 gets OFF.
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