PLCs and DCS systems are found throughout industry, in a

number of different applications. Please answer the following:

i Why might someone select a PLC over a DCS$?$ What are some

common applications where a PLC is a better choice?

ii What are some of the characteristics of an application where a DCS

system is a better choice?

iii Are PLCs and DCS systems ever used in conjunction with one

another? If so$,$ what is an example?