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Distributed Control Systems (DCS) or Programmable Logic Controllers (PLC)

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DCS or PLC ? Seven Questions to Help You... Select the Best Solution... Distributed Control Systems (DCS) or Programmable Logic Controllers (PLC)         For manufacturers in the process industries, the procedure for selecting the best automation technology is not as easy as it once was. In the past it was fairly easy to determine whether a PLC or a DCS was right for your application, because their strengths and weaknesses were well understood. In recent years this has become more difficult, thanks primarily to the advancement of the microprocessor, which has allowed the technologies to merge. With the trend toward flexible manufacturing in industry, many of the applications in the process industries now share the requirements traditionally thought to be exclusive to either DCS or PLC. These hybrid applications typically require a process control system that can deliver both PLC and DCS capabilities. Thus understand-ing the merging of PLC and DCS functionality i...

AB - SLC 500 [I/O MODULES AND HARDWARE]

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I/O Adapter Modules      1747 I/O adapter modules allow 1746 I/O modules in a remote chassis to be controlled by SLC and PLC processors. SLC processors require a scanner module to reside in the local chassis in order for the remote communication to occur. The adapter module must reside in the left-most slot of the remote chassis and can interface to a maximum of 30 1746 I/O modules residing in up to three interconnected chassis. There are three 1746 I/O adapter modules: the 1747-ASB for remote I/O communication, the 1747-ACN15 for remote communication via ControlNet, and the 1747-ACNR15 for remote communication via ControlNet with redundant media port. Specifications Cat. No. 1747-ACN15 1747-ACNR15 1747-ASB Description Single-port non-redundant-media/redundant-media ControlNet I/O adapter module Universal Remote I/O adapter module Ports ControlNet I/O adapter port Universal Remote I/O adapter port Communication Rate ...