When Start PB is pressed, The Output energizes. When PB is released, the output still remains ON till stop button is pressed.

sol:-

here i have given two solution for same the problem statement.

first solution is of two rungs and second solution is one rung solution both gives the same results.

(in first solution):- when start press button is pressed the latch coil gets activated and remain active even if the start press button is released so the output remains on and when the stop button is pressed it will unlatch the same coil and thus the output goes off or reset.

(in the second solution):- when the press button is pressed then it will activate the output and one NO contact is placed in parallel with the start NO contact so as soon as the output coil gets activated it will close the NO contact in parallel with the start button and it will maintain the connection and when the stop NC button is pressed it will disconnect the supply and it will reset the output to zero.

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