These four-port slim-design IO-Link masters connect smart devices over IO-Link to build a distributed machine-mount controls architecture. With IP67 housing, these industrial Ethernet-based IO-Link masters can be mounted directly on the machine closer to the sensors and actuators, keeping short cable runs and adding enhanced diagnostics. EtherNet/IP, Profinet and EtherCAT version of the masters are available. These masters are ready for IIoT and Industry 4.0 application realization. Full-service webserver for EtherNet/IP and Profinet IO-Link masters enable remote diagnostics and configuration of the master as well as attached IO-Link devices. With SNMP onboard, the IO-Link master and all IO-Link devices are discoverable for network management systems for critical data gathering.