Masters Theses
Abstract
"This thesis confronts the issue of set path communication in Programmable Logic Controllers (PLCs). In order to increase reliability in a networked automated process, it is necessary to develop a dynamic method of communication between PLCs. Three methods for dynamic messaging in PLCs are explored in this work. These methods are based on the real-time reconfiguration of message paths when communication fails on the originally configured path. The simplest method involves replacing the original message block with an Add-On Instruction (AOI) which can accept multiple communication paths and has the ability to switch between these paths to maintain communication. A more complex method involving a complete network scan in order to automatically build communication paths is also explored. Finally, a direct scan method having the ability to build communication paths between two controllers which are located on multiple common networks is developed. For the purpose of this research the Allen-Bradley ControlLogix platform was used"--Abstract, page iii.
Advisor(s)
Erickson, Kelvin T.
Committee Member(s)
Miller, Ann K.
Sarangapani, Jagannathan, 1965-
Department(s)
Electrical and Computer Engineering
Degree Name
M.S. in Electrical Engineering
Publisher
Missouri University of Science and Technology
Publication Date
Fall 2010
Pagination
viii, 67 pages
Note about bibliography
Includes bibliographical references (pages 72-74).
Rights
© 2010 Richard Andrew Hardison, All rights reserved.
Document Type
Thesis - Open Access
File Type
text
Language
English
Subject Headings
Communication -- Network analysisProgrammable controllers -- Design and constructionProgrammable logic devices
Thesis Number
T 9730
Print OCLC #
722899860
Electronic OCLC #
681627082
Recommended Citation
Hardison, Richard Andrew, "Dynamic networking for programmable logic controller communication" (2010). Masters Theses. 4854.
https://scholarsmine.mst.edu/masters_theses/4854