Title:
PROGRAMMABLE LOGIC CONTROLLER SOFTWARE WITH EMBEDDED CLASS LOGIC AND ALARM/SHUTDOWN FUNCTIONALITY
Document Type and Number:
WIPO Patent Application WO1998057246
Kind Code:
A3
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.
Inventors:
WORTH STEPHEN J
SILVA MICHAEL J
SILVA MICHAEL J
Application Number:
PCT/US1998/012021
Publication Date:
March 18, 1999
Filing Date:
June 09, 1998
Export Citation:
Assignee:
AMOT CONTROLS CORP (US)
International Classes:
G05B19/05; (IPC1-7): G06F/
Foreign References:
| US4367414A | 1983-01-04 | |||
| US4380146A | 1983-04-19 | |||
| US5748119A | 1998-05-05 |
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