Title :
Distributing PLC control
Author :
Kouthon, T. ; Peraldi, M.A. ; Decotignie, J.-D.
Author_Institution :
Dept. of Comput. Sci., Swiss Federal Inst. of Technol., Lausanne, Switzerland
Abstract :
In this paper we address the problem of distributing PLC control over an industrial network. We consider a synchronous industrial network, where data transmission delays can be computed and known in advance. We consider a particular class of PLC control applications, namely applications that support periodic input acquisition. It is shown how control specified with the Grafcet language can be achieved in a distributed PLC control system, when data delivery delays are not negligible, and how the input acquisition period can be by minimized. A technique is introduced to transform the Grafcet diagram of a PLC application into one that can be executed in a distributed environment
Keywords :
computer networks; data communication; distributed control; industrial control; programmable controllers; Grafcet language; PLC control; data transmission delays; distributed control; input acquisition period; periodic input acquisition; synchronous industrial network; Actuators; Communication system control; Computer industry; Computer networks; Control systems; Electrical equipment industry; Hardware; Industrial control; Manufacturing industries; Programmable control;
Conference_Titel :
Industrial Electronics, Control, and Instrumentation, 1995., Proceedings of the 1995 IEEE IECON 21st International Conference on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-3026-9
DOI :
10.1109/IECON.1995.484192
