Programmable logic controller software with embedded class logic and alarm/shutdown functionality
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United States of America Patent
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Oct 31, 2000
Grant Date -
N/A
app pub date -
Jun 8, 1998
filing date -
Jun 10, 1997
priority date (Note) -
Expired
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Abstract
A computer-implemented method and a computer-readable program for designing software applications for execution in a programmable logic controller includes determining whether a physical input is analog or discrete, and responsive to the physical input being analog, inputting a set of analog parameters, and responsive to the physical input being discrete, inputting a set of discrete parameters, and storing the parameters in a user parameter data table. The method includes executing a programmable logic controller application responsive to a set of user-defined parameters, including reading an input, and determining whether the input is in fault, and, responsive to the input being in fault, performing an operation from a group of operations consisting of an alarm and a shutdown.
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