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a preliminary program design strategy that calls for dividing the machine or process into major units
program design strategy
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documents actual connections between field devices and input/output modules
I/O device wiring diagram
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a systems design approach in which the process is first divided inot major units, the units into tasks and subtasks, and finally, the task divided int operations
top-down bottom-up
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schematic diagrams of hardwired contrl circuits
relay elementary drawing
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type of schematic diagram that shows wiring and interconnections for regualroty control systems
system arrangement drawing
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refers to the PLC program, or the definition of how individual devices, process loops, or functions will operate
control logic
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written operational descriptions of the various components and/or functions of a machine or process
functional specifications
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a documentation component that identifies devices that must be monitored or controlled by the PLC
I/O point list
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tabular listing of the motors and varius electrical devices of a machine or process to be controlled
motor and electrical devices list
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visual counterpart f system abstract, shws single-line interconnection of major control system components
system arrangement drawing
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a documentation component that organizes and allocates the use of input and output addresses
I/O assignments document
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plan or methodology for structuring the control code
process partitioning
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an organized collection of recorded information regarding the operation of a machine, process, or system
documentation
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in a given machine or process, any one of more equipment sysbsystems which perfrom a logical part of the whole operation
process unit
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a graphic control representation that uses standard Boolean logic symbols AND, OR, and NOT
logic gate diagram
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a written documentation component that provides a synopsis of the control system
system abstract
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collection of documents presented to the end-user regarding the design, installation, and maintenance of the control system
documentation package
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usage of PLC's so-called software control relays
internal output assignments
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type of project in which a PLC may be used to replace r upgrade and existing control system
retrofit
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a graphical design tool or language, consisting of arithmetic, logic, and control elements, used to generate analog loop control strategies
Function Block Diagram
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graphic representation that depicts an overview of process equipment and instrumentation
piping and instrumentation diagram
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