System and method for device sequencing using discrete PLC control
First Claim
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1. A method for operating a programmable-logic-controller controlled device, comprising:
- providing a programmable logic controller having at least one input and at least one output;
providing a data table, stored in a computer-readable medium, readable by the programmable logic controller;
reading a first word from the data table;
performing an operation at a first station, controlled by the programmable logic controller, according to the contents of the first word.
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Abstract
A system and apparatus for discrete PLC control using word sequences in a data table for controlling a device on an assembly line. The data table contains sequencing information which defines, for each station on the line, a series of operations with corresponding setup and operation parameters. By placing the sequencing information in a data table, programming or changing the series of operations for a PLC is made much more simple and efficient.
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Citations
22 Claims
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1. A method for operating a programmable-logic-controller controlled device, comprising:
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providing a programmable logic controller having at least one input and at least one output;
providing a data table, stored in a computer-readable medium, readable by the programmable logic controller;
reading a first word from the data table;
performing an operation at a first station, controlled by the programmable logic controller, according to the contents of the first word. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus, comprising:
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a programmable logic controller having at least one input and at least one output;
a data table, stored in a computer-readable medium, readable by the programmable logic controller;
at least one device connected to be controlled by the programmable logic controller; and
at least one word stored in the data table;
wherein the word defines a device operation and corresponding operation parameters. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification