The Profinet DiagnoseDUO combined solution from Indu-Sol works like a navigation system for the plant and can support maintenance engineers in monitoring Profinet and Ethernet networks. The interplay between the live topology plan and diagnostic display means that the position of each network node and its "health status", which is indicated graphically by traffic light colors, can be seen immediately. The Proscan Active topology software works with the Profinet inspector, which is responsible for network diagnostics. The Promanage software provides a solution for the control level. It enables central, cross-fieldbus monitoring of several inspectors or switches.