Heidenhain Corp. (Schaumburg, IL) has introduced the ROC/ROQ 400 series PROFIBUS rotary encoders that support the DP-V2 encoder profile for robot control and production technology. The encoders with 58-mm housing diameter feature M12 or M23 input connectors and flange sockets for easier cable connections. M12 flange sockets allow the use of preassembled standard cables. Absolute rotary encoders with PROFIBUS comprise single-turn and multi-turn versions, and can be configured and parameterized for specific applications. The encoders support the functions of Conformance Class 4 (full scaling and preset functions), and offer Ethernet-based real-time and IT communication.