Multi-language generation of control program for an industrial c

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36422282, 3642604, 3642804, 3642807, 364DIG1, G06F 944

Patent

active

055049028

ABSTRACT:
A method and system for generating a control program executable by an industrial controller, wherein the control program is formed using instructions from a high-level text-based language and instructions from a ladder-based language. A source program is received by a host computer. At least one instruction of the source program in the high-level text-based language is displayed on a display device along with a corresponding ladder diagram of the source program in the ladder-based language. The source program is edited in either the high-level text-based language using a first editor or the ladder-based language using a second editor. Modifications of the source program made using the first editor and the second editor are converted to a lower-level language representation. The lower-level language representation is convertible to both the high-level text-based language and the ladder-based language, so that modifications made in the high-level text-based language dynamically update the ladder diagram display and modifications made in the ladder-based language dynamically update at least one line of displayed text.

REFERENCES:
patent: 5083262 (1992-01-01), Haff, Jr.
patent: 5142681 (1992-08-01), Driscoll et al.
patent: 5386569 (1995-01-01), Harada et al.
Article entitled "An Arithmetic Checksum for Serial Transmissions", by John G. Fletcher, IEEE Transactions on Communications, vol. Com. 30, Nov. 1, Jan. 1982.

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