Abstract

The increasing presence of industrial control systems in high-energy physics laboratories raises the questions of their integration into the general control infrastructure and the organisation of the operation of the associated equipment. The method of integration is dictated by the adopted operation strategy; in turn, the latter determines the former. After an introduction to industrial control systems this paper describes different communication mechanisms with alien systems provided by manufacturers and reports on experience acquired at CERN. The major operation strategies in terms of level of coupling are described and their requirements on the integration methods are discussed.

Highlights

  • Commercial industrial conuol systems have entered high energy laboratory sites either as integral parts of large installadons or as embedded controllers hidden in equipment which are largely used in industry [1,2]

  • While it was immediately obvious that the former needed to be monitored and partly controlled because of their tight coupling to accelerator operations, it took some time before it was felt there was a need for integrating the latter

  • Communicating between programmable logic controllers (PLC) of different brands has been made possible by the emergence of the Manufacturing Automation Protocol (MAP) standard [4,6]

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Summary

INTRODUCTION

Commercial industrial conuol systems have entered high energy laboratory sites either as integral parts of large installadons or as embedded controllers hidden in equipment which are largely used in industry [1,2]. While it was immediately obvious that the former (cryogenics, tunnel cooling and ventilation, etc.) needed to be monitored and partly controlled because of their tight coupling to accelerator operations, it took some time before it was felt there was a need for integrating the latter (water distribution, building heating, etc.). The general belief is that this practice should be abandoned in favour of tumkey systems; the integration issue for all control systems is posed with an increased need of completeness

CONTROLS IN INDUSTRY
Intra-PLC Communications
Discussion
CONCLUSION
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