Sequential function chart (SFC) online editing without reset

US8612886B2 · kind B2 · utility

Assignee

• Rockwell Automation Technologies, Inc. · US

Inventors

• Michael Silvestro · Twinsburg, US
• Joshua Steven Dearth · Mayfield Heights, US
• Christopher E. Stanek · Mayfield Heights, US
• John E. Belcher · Euclid, US
• Ronald E. Bliss · Twinsburg, US
• Jeffery W. Brooks · Mentor, US
• Jack M. Visoky · Willoughby, US

Key dates

• Filing date: Sep 28, 2007
• Grant date: Dec 17, 2013
• Expiry date: Oct 11, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B19/0426
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A change monitor as part of an online editor of a sequential function chart (SFC) programming environment monitors edits to a control routine. The change monitor provides warning to users before taking actions that would result in a reset of the control routine currently being executed by an industrial controller. The change manager reduces or eliminates many situations that would otherwise result in a reset as well by instructing online editor as to what language elements need to be assembled to implement the change. The change monitor also filters the manner in which reset warnings are given to reduce unnecessary distractions.