Performance optimization for ControlNet network

Many different network types have been promoted for use in control systems. ControlNet network is a well known member of the family of protocols —the CIP (Control an Information Protocol). It has been developed by Rockwell Automation. The ControlNet network’s mission is to provide reliable, high-speed transport of two basic types of application information: control and I/O data; non-time critical messaging data related to the controlled system. Firstly, this paper introduces the ControlNet of Rockwell three networks and the background of three layers networks; Secondly, through the configuration in RSLogix5000 to the network, the optimization in RSNetWorx is studied; Finally, we study the key parameters of the network and a detailed discussion of parameters optimization for ControlNet network is provided, including network utilization, NUT, magnitude of the expected time delay, and characteristics of time delays. Simulation results are presented for several different scenarios, and the advantages and disadvantages of the network are summarized.