US 11,789,421 B2Granted

Efficient client updates using patience difference algorithm in a unidirectional data flow architecture for industrial automation design

AssigneeRockwell Automation Technologies, Inc.

InventorJeffrey Vertosick

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Abstract

An industrial integrated development environment (IDE) identifies modifications to an industrial control program using a combination of program hashing and text differencing. The system performs deep-level hashing of the control program's text model to obtain hash data comprising rung-level hash values that collectively represent the current state of the program. When edits to the program are received, the modified text model is hashed again to yield modified hash data, and differencing analysis is performed on the initial and modified hash data. Differences between the two sets of hash values are used to identify portions of the control program that have been modified so that the targeted updates to a logic view of the program can be implemented. This allows the logic view to be updated without redrawing the entire view, and without the need to store multiple copies of the program's object model for comparison purposes.

Claims20

Dependent claims

A system, comprising:

a memory;
and
a processor, operatively coupled to the memory that executes executable components stored on the memory, wherein the executable components comprise:
a user interface component configured to display a program development interface on a client device, the program development interface configured to render a logic view of an industrial control program;
a project generation component configured to generate a text model of the industrial control program in accordance with programming input submitted via the user interface component;
a hashing component configured to
generate initial hash data based on content of the text model, and
in response to receipt of one or more edits to the industrial control program, generate modified hash data based on updated content of the text model;
and
a difference detection component configured to identify portions of the industrial control program that have been modified by the one or more edits based on comparative analysis of the initial hash data and the modified hash data,
wherein the user interface component is further configured to perform targeted updates to the logic view of the industrial control program, the targeted updates directed to the portions of the industrial control program identified by the difference detection component.

8 more elements

A method, comprising:

generating, by a system comprising a processor, a text model of an industrial control program;
rendering, by the system, a logic view of the industrial control program on a client device via a program development interface;
generating, by the system, initial hash data based on content of the text model;
and
in response to receipt of one or more edits to the industrial control program:
generating, by the system, modified hash data based on updated content of the text model;
identifying, by the system, portions of the industrial control program that have been modified by the one or more edits based on comparative analysis of the initial hash data and the modified hash data;
and
performing, by the system, targeted updates to portions of the logic view corresponding to the portions of the industrial control program.

6 more elements

Dependencies are inferred from the claim text.