The Problem with Programmable Controllers
D. L. Smith · IEEE Transactions on Industrial Electronics and Control Instrumentation · 1974
The problem with programmable controllers is that there are so many on the market today. It is very difficult to make a choice on the basis of sales literature, because the advantages and problems are not obvious. It is the intent of this paper, therefore, to examine some of the characteristics of the various programmable controllers and see how they compare for different applications.