Depending on the era and application, industrial automation technology has been influenced by a wide variety of fieldbuses and protocols for connecting individual field devices and control systems since the 1980s. So far, these specific fieldbuses have satisfied the real time conditions of the relevant application while remaining incompatible with one another.
A new transmission standard called “Time Sensitive Networking (TSN)” is therefore gaining ground. The TSN standard is specified in der IEEE 802.1 Working Group, see: (www.ieee802.org/1/pages/tsn.html)
TSN is based on (standard) Ethernet and enables deterministic OT data transmission with guaranteed latency and QoS, parallel to conventional IP traffic (from IT, for instance) on the same medium, thus paving the way towards merging the two worlds.