"This thesis explores the topics related to reconfiguration of Programmable Logic Controller's (PLC's) communications paths as it relates to network security and reliability. These paths are normally fixed, which creates a single fault point which can easily be disrupted by network failure or network based attack. With the ability for autonomous communications path reconfiguration these disruptions in communications can be avoided or bypassed. This work builds on these principles and a series of PLC programs are developed to facilitate several things: Scanning of the three different network types most common in PLC to PLC communications; a comprehensive network scan routine for locating multiple communications paths to available network enabled modules and devices; add-on functions for verifying and using these found communications paths; and MS Excel macros for documenting the found modules and devices along with their communications paths from the host processor"--Abstract, page iii.
Erickson, Kelvin T.
Miller, Ann K.
Grant, Steven L.
Electrical and Computer Engineering
M.S. in Electrical Engineering
Missouri University of Science and Technology
viii, 54 pages
© 2009 Curtis Alan Parrott, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Communication -- Network analysis
Programmable controllers -- Design and construction
Programmable logic devices
Print OCLC #
Electronic OCLC #
Link to Catalog Recordhttp://laurel.lso.missouri.edu/record=b7463662~S5
Parrott, Curtis Alan, "Real-time reconfiguration of programmable logic controller communication paths" (2009). Masters Theses. 4738.