462 PLC ch 1

  1. These PLC components accept and conditions field signals, then passes the information to the CPU
    input modules
  2. The process of reading field inputs, executing the control program, and controlling the field outputs
    cyclic scan
  3. entering, modifying, and troubleshooting the control program requires this component
    programming device
  4. category of PLCs that is cost competitive with relays, but offer much more functionality
    low-end PLC
  5. main PLC component that enables the electronic circuitry of the other main components to operate
    system power supply
  6. primary programming language for most PLCs
    ladder diagrams
  7. individual control device, designed specifically for controlling machines and processes by means of a stored program and feedback from field sensing and actuating devices
    programmable controller
  8. PLC component that accepts commands frm the CPU to control the states of devices such as motors, indicators, and position valves, and drives
    output modules
  9. name given to the category of PLCs that typically supports up to 4096 input/output dvices
    high-end controller
  10. major component of the PLC controls each machine or process via the input/output modules
    central processing unit
  11. An I/O configuration freature of the PLC allowing I/O racks to be placed at great distances from the CPU
    remote I/O
  12. type of control that places fixed series and parallel cnnections between sensor and actuator devices to determine the control functionality
    hardwired logic
  13. design feature of most PLC components that signals either correct or malfunctioning operation
    LED indicators
  14. PLCs primary design makeup that results in low component failure, minimal space and power consumption, and virtually no mechanical wear
    solid state components
  15. group of compatible PLCs of the same brand having similar design features and covering a range of capability from the simple to the complex
    family of controllers
  16. major PLC section enables the CPU to monitor and control the field devices of a controlled machine or process
    input/output system
  17. name usually given to any PLC supporting fewer than 64 input/output connections
    low-end PLC
  18. input/output interfaces that generally incrportate their own microprocessor and memry, and that are designed to perform specific control or other tasks independent of the CPU
    intelligent I/O
  19. sub-component of the central processing unit that stores the control program
Card Set
462 PLC ch 1
PLC Chapter 1