478 terms ch 09

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samantha886
ID:
201917
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478 terms ch 09
Updated:
2013-02-19 22:22:04
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478 terminology
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  1. computer programming codes that
    give a PLC the ability to perform mathematical functions on data.
    Arithmetic instructions –
  2. a PLC programming language, based
    primarily on the Boolean logic operators, that implements all of the functions
    of the basic ladder diagram instruction set.
    Boolean language –
  3. a ladder diagram symbol that represents and output
    instruction.
    Coil –
  4. a ladder diagram symbol that represents an input
    condition.
    Contact –
  5. computer programming codes that allow
    a PLC to perform accounting functions of a hardware counter.
    Counter instructions –
  6. computer codes that provide
    a PLC with the ability to compare, convert, shift, examine, and operate on data
    in multiple registers.
    Data manipulation instructions –
  7. computer codes that allow a PLC
    to move numerical data within the controller, either in single register units
    or in blocks of registers.
    Data transfer instructions –
  8. arithmetic instructions that
    use double the number of registers than single-precision arithmetic to hold the
    operands and result.
    Double-precision arithmetic –
  9. a PLC language that implements
    basic ladder language instructions, as well as more sophisticated functional
    block instructions, which can perform multiple operations in a single
    instruction.
    Enhanced ladder language –
  10. a PLC programming language that uses an
    object-oriented, flowchart-like framework, along with steps, transitions, and
    actions, to define the control program.
    Grafcet –
  11. a graphical set of instructions that
    implements basic ladder relay functions in a PLC.
    Ladder language –
  12. computer codes that implement
    relay coils and contacts and their corresponding functions in a PLC.
    Ladder relay instructions –
  13. a rectangular array that defines the
    maximum number of contacts that can be programmed in a ladder rung, along with
    the maximum number of parallel branches allowed in the rung.
    Ladder rung matrix –
  14. computer codes that
    allow a PLC to share data with other PLCs connected to a local area network.
    Network communications instructions –
  15. computer codes that give
    a PLC the ability to direct the flow of operation and alter the order of
    execution of a control program.
    Program/flow control instructions –
  16. arithmetic instructions that
    use one register each to hold the operands and one or two registers to hold the
    result of the operation.
    Single-precision arithmetic –
  17. computer codes that allow a
    PLC to perform special operations, such as sequencing, diagnostics, and PID
    control.
    Special function instructions –
  18. computer codes that allow a PLC to
    perform the timing functions of a hardware timer.
    Timer instructions –

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