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Object Orientated Programming (OOP) has enabled rapid growth in control system software implementation and deployment. The rapid adoption of OPC is a good case study on some of the benefits of an OOP approach. OOP techniques have enabled software engineers to put the word ‘advanced’ into the phrase 'control applications'. It has also facilitated the rapid evolution of software for process control. Without the economic gains due to creation of re-useable code, vendors would not have been motivated to push the technology envelope as they have. Process Control programmers have done their best to enable the assembly of best-of-breed systems using OPC. Now the focus shifts to the solution integration.
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