FFXI Haven - #1.
2. The cart_detect opens the filling valve. 3. After a delay of 30 seconds from the start of the filling of the tank the tank outlet valve opens. When the tank is full the filling valve closes. 4. When the tank is empty the outlet valve is closed. 5. After a 10 second delay, from the tank outlet valve opening, a water jet is opened. 6. After 2 seconds the water jet is closed and the process returns to the idle state. 1. Write a ladder logic program to extend and retract a cylinder after a start button is pushed. There are limit switches at the ends of travel. If the cylinder is extending if more than 5 seconds the machine should shut down and turn on a fault light. If it is retracting for more than 3 seconds it should also shut down and turn on the fault light. It can be reset with a reset button. 2. Design a program with sequence bits for a hydraulic press that will advance when two palm buttons are pushed. Top and bottom limit switches are used to reverse the advance and stop after a retract. At any time the hands removed from the palm button will stop an advance and retract the press. Include start and stop buttons to put the press in and out of an active mode. 1. A machine has been built for filling barrels. Use process sequence bits to design ladder logic for the sequential process as described below. 1. The process begins in an idle state. 2. Easy Access To All Pages 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 |
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