With that said, the controls world is going to be moving with anautomation that has a definite consumer bias, with product development and release cycles of six months or less. In an industry where the average life expectancy of an automotive production line is eight years, it is impossible to expect the networking in an industrial setting to keep up with modern IT standards. Therefore, we turn our attention to the technologies that have existed the industrial, with the most open standards and the very best support. These are the protocols we wish to use and keep, and this article highlights and explains some of these technologies. This article does not focus on the technical implementations of each piece of technology. Rather, it is assumed the reader will be using packaged solutions such as a function block for a PLC.
refer to: http://www.automation.com/leveraging-it-technology-for-industrial-controls-applications