FFXI Haven - #1.
2. Write a ladder logic program to output an ASCII warning message on channel 1 when the value in N7:0 is less than 10, or greater than 20. The message should be "out of temp range". 3. Write a program that will send an ASCII message every minute. The message should begin with the word count, followed by a number. The number will be 1 on the first scan of the PLC, and increment once each minute. 4. A PLC will be controlled by ASCII commands received through the RS-232C communications port. The commands will cause the PLC to move between the states shown in the state dia 5. A program is to be written to control a robot through an RS-232c interface. The robot has already been programmed to respond to two ASCII strings. When the robot receives the string start it will move a part from a feeder to a screw machine. When the robot receives an idle command it will become inactive (safe). The PLC has start and end inputs to control the process. The PLC also has two other inputs that indicate when the parts feeder has parts available (part present) and when the screw machine is done (machine idle). The start button will start a cycle where the robot repeatedly loads parts into the screw machine whenever the machine idle input is true. If the part present sensor is off (i.e., no parts), or the end input is off (a stop requested), the screw machine will be allowed to finish, but then the process will stop and the robot will be sent the idle command. 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 |
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