A Water or Wastewater treatment operation's efficiency is rigorously constrained by its ability to effectively communicate with its associated field equipment and instrumentation. This communication manifests itself in both analog process data from field instrumentation and digital
status data from field equipment and instrumentation. Control systems installed in treatment plants require communications to each device to retrieve the data for control, alarming, reporting, and presentation to the user. Communications have traditionally consisted of 4-20 mA analog data
or contact closure discrete data to the control system modules. The common approach used to physically connect the various components of a traditional system utilized the “spider” method where one cable pair is wired to each device and piece of equipment.
Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.