Until about 3 months ago one of my volunteer activities was to work with the Fieldbus Foundation in the development of the specifications for their High Speed Ethernet (HSE) Remote I/O project and the biggest concern we had and were unable to get a firm answer was the demand for an HSE backhaul based Remote I/O solution. We all knew that there were a wide range of options on the market from single module units with 4 – 8 I/O to those using other protocols such as Ethercat with hundreds of signals per station.