PLC Day 1 Vocabulary

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Across
  1. 2. Memory that stores the PLC program
  2. 5. Making decisions based on input conditions.
  3. 6. Can only handle ON/OFF signals
  4. 10. Working consistently without failures
  5. 11. Temperature sensor that uses voltage
  6. 12. Industrial Computer for Controlling Machines
  7. 15. Single on/off memory location
  8. 16. Increasing current to drive a load
  9. 17. Extra device that connects to the PLC.
  10. 22. Removing unwanted noise from input signals
  11. 23. Device that isolates PLC electronics from high voltages using light
  12. 26. Can handle a continuous signal with a range of values
  13. 27. All Inputs and Outputs are built in; can’t change number or type
  14. 28. Identifying why a process or machine failed.
  15. 29. Unintended low-resistance path causing high current
  16. 33. Electromagnetic device that creates linear motion
  17. 36. Ignoring unwanted signals
  18. 38. Stored state of all outputs
  19. 40. Converts signals to levels the PLC CPU can read
  20. 41. How long a signal must be present to be accepted by the PLC
  21. 42. Repeated loop the PLC uses to read inputs, run logic, and update outputs.
  22. 43. Tool used to write or upload the PLC program
  23. 44. Random access memory, user memory, stores variables while the PLC runs.
Down
  1. 1. Device that sends an analog signal to the PLC from a sensor
  2. 3. Uses a rack; can add more & different types of inputs and outputs
  3. 4. Resistance Temperature Detector - temperature sensor that uses resistance
  4. 6. Moving or storing values in memory
  5. 7. Relay that stays in position after input is removed
  6. 8. Electrical switch operated by a coil
  7. 9. Time when production is stopped
  8. 10. Read Only Memory, permanent memory, programmed by manufacturer
  9. 13. Tracking how many times something happens
  10. 14. Output that turns on a light or sound to signal a warning
  11. 18. Data that can change while the PLC runs.
  12. 19. Stored state of all inputs
  13. 20. Sensors and actuators in a factory
  14. 21. Modules that read inputs and control outputs
  15. 24. Device that converts a physical condition like pressure or force into an electrical signal
  16. 25. Shutting down output if current is too high
  17. 30. Converting field voltage to CPU voltage
  18. 31. Turning outputs on/off for specific periods of time
  19. 32. Memory for values that change during operation
  20. 34. Memory copy of inputs and outputs
  21. 35. Uses electronics, not moving parts
  22. 37. Central Processing Unit - brain of a PLC, executes the program
  23. 39. Short, accidental signal that isn’t meaningful