Communication technology plays an important role for machinery and plant engineering. Within the initiatives for industry 4.0 and IoT it has become even more important. The ISW promotes in this context innovations in the field of real-time capable and not capable as well as wired, wireless and powerline communication mechanisms. Besides the specification of communication protocols and profiles this includes also validating and testing. The ISW is further firmly anchored in the Sercos and OPC UA Community.