Top 5 Control Engineering articles, September 10 to October 9: The first PLC, future of the PLC, System Integrator Giants, more
Control Engineering Top 5 most read articles online, for Sept. 10 to Oct. 9, the competition to make the first PLC, the PLC’s future, System Integrator Giants of 2014, cascade control fundamentals, and open- vs. closed-loop control. Link to each article below.
The race to develop the first programmable logic controllers was underway inside General Motors’ Hydra-Matic Transmission Division in Ypsilanti, Michigan, in 1970. Three finalists had very different architectures.
PLCs are evolving and continue to be the best option for a variety of industrial automation applications. Greater programming flexibility and ease, scalability, more memory, smaller sizes, very high-speed (Gigabit) Ethernet, and built-in wireless are among evolving programmable logic controller features.
The 2014 System Integrator Giants boast a $396 million increase in system integration revenue, a greater concern for the economy’s impact on the automation integrator market, and a strong belief in educational and mentoring programs for employees.
Sometimes two controllers can do a better job of keeping one process variable where you want it.
The list was developed using CFE Media’s web analytics for stories viewed on controleng.com, from September 10 to October 9, for articles published within the last two months.
– Chris Vavra, production editor, CFE Media, firstname.lastname@example.org.
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