|
Vol: 48(62) No: 1 / March 2003 Implementation of Serial Communication in Digital Control System Applications with Programmable Logic Controllers O. Moldovan S.C. U.C.M. Resita - SA, Digital Speed Governors Designing Department, Calea Caransebesului, Nr. 16, Resita, Romania, phone: 0255-251715, e-mail: moldojr@terrasat.ro Keywords: programmable logic controller, communication interface, communication protocol, PLCs Network. Abstract Through digital information we understand the main matter and the structural and functional foundation of the present technical and industrial era. Therefore, the way of transmitting information could be the mean through which the industrial application can trace and reproduce with high accuracy the structural and functional features, imposed by the designer of the automation system. Even though it seems to be facile, the bi-directional transfer of the information between the control system and the driven or controlled process creates many difficulties, which are alike in designing, optimizing and running of a certain application. This paper tries to offer an introduction as a pragmatic view into the implementation area of the serial communication equipment associated to the control systems within the hydro power plants. References [1] O. Moldovan, “Analiza comparativă a unor tipuri de automate programabile prin prisma posibilităţilor de implementare a acestora în procesele industriale”, Doctoral Report, “Politehnica” University of Timisoara,. June 2003. [2] M. Gavris and E. -I. Gergely, Conducerea proceselor cu automate programabile (in Romanian), Editura Mediamira, Cluj-Napoca, 2003. [3] ***, “TCP/IP Ethernet Communications for the Series 90-30 PLC. User’s Manual”, GE Fanuc Automation, January 1996. [4] ***, “Series 90-30 Programmable Controllers. Reference Manual”, GE Fanuc Automation, 1997. [5] ***, “RTU Master Communication Module”, Horner APG, August 1999. [6] ***, “Series 90 PLC Serial Communications. User’s Manual”, GE Fanuc Automation, October 1996. [7] ***, “TCP/IP Ethernet Communications for the Series 90 PLC. Station Manager Manual”, GE Fanuc, October 1998. [8] ***, “Modicon Fiber Optic Repeaters. User’s Guide.”, Modicon, June 2003. [9] ***, “Instructions for installation and use of magnetostrictive transducers”, DS Europe Srl, Milano, Italy, January 2001. [10] ***, “CAN Data Concentrator Module”, GE Fanuc Automation, March 1999. [11] B. Guzun et al., Automatizari in hidroenergetica (in Romanian), Editura Tehnica, Bucharest, 1995. [12] ***, “Info Link: A Product Information Library from GE Fanuc Automation, 2001. [13] ***, “Versa Pro Programming Software. User’s Guide”, GE Fanuc Automation, 2000. [14] ***, “Cimplicity System I/U and Logicmaster 9.0 Serial Software. Installation Manual”, GE Fanuc Automation, May 1994. |