Help with project, not sure how to turn it into a ladder logic program

Discussion in 'Homework Help' started by, Dec 9, 2009.


    Thread Starter New Member

    Dec 9, 2009
    Slide 2 .O {font-size:149%;} 1.Use separate subroutine for “Main”, “Conveyor”, “Clamp”, and “Drill”.
    2.E-Stop de-energizes entire process.
    3.When the “Start” pushbutton is pressed “Run Process” is enabled and stays enabled after “Start” is released.
    4.“Stop” pushbutton de-energizes entire process.
    5.Any time “Run Process” is enabled, a red warning light will turn on.
    6.When “Run Process” is enabled, the conveyor starts after a selectable delay (via thumbwheel input).
    7.Conveyor stops when object on conveyor blocks the photoeye at the end of the conveyor.
    8.Clamp cylinder extends 2 seconds after the conveyor stops.
    9.Drill motor starts when clamp cylinder is fully extended.
    10.Drill starts downward travel 2 seconds after motor starts.
    11.Drill starts back up as soon as it is at bottom of travel.
    12.Drill stops when it is back to the up position.
    13.Clamp cylinder retracts 2 seconds after the drill has stopped.
    14.Process is ended when the cylinder has reached the retracted position.
  2. JRThro

    New Member

    Dec 9, 2009
    How familiar are you with ladder logic?

    Do you know how to do any of the steps? Most of them involve the closing of a normally open contact (or the opening of a normally closed contact) by from either a manual pushbutton or a limit switch of some kind.

    Thread Starter New Member

    Dec 9, 2009
    Yes, I have some of it down, just want to make sure it's correct. Do not have a scanner to show my progress.