The CMS Event Builder Demonstrator and Results with Ethernet and Myrinet Switch Technologies
The data acquisition system for the CMS experiment at the Large Hadron Collider (LHC) will require a large and high performance event building network.Several architectures and swithch technologies are currently being evaluated.This paper describes demonstrators which have been set up to study a small-scale event builder based on PCs emulating high performance sources and sinks connected via Ethernet or Myrinet switches.Results from ongoing studies,including measurements on throughput and scaling,are presented.
Introduced a new method that can realize the serial communication bettween OMRON's PLC and PC under the intgrated development environment of Delphi.Applying the method to the development and research of the virtual elevator control system,have realized the information exchange between PLC and virtual evevator control system.