The Advant Controller 31 series offers small and compact PLCs with central and decentralized extensions. The Advant Controller 31 series 90 offeres powerful PLCs for challenging applications with various configuration options and up to five communication interfaces. The PLC provides 60 I/Os internally and could be expanded decentrally. The combination of integrated communication fieldbus allows to connect the PLC to several protocols like e.g. Ethernet, PROFIBUS DP, ARCNET or CANopen