The Bosch Rexroth CML75 series is a modular, DIN rail-mountable control platform designed for a wide range of industrial automation applications. It integrates PLC, motion logic, and CNC functionality into a single compact package, making it suitable for everything from standalone machines to complex, multi-axis production systems. The platform’s scalable hardware and software architecture allows users to tailor the system precisely to their application requirements.

Key Features & Specifications

• High-Performance Computing: Powered by an Intel Atom E3827 dual-core processor running at 1.75 GHz with the VxWorks 6.9 real-time operating system, ensuring deterministic and reliable execution of control tasks. The system is equipped with 4 GB of DRAM, 16 MB of buffered SRAM, and 1 GB of Flash memory for program and data storage.
• Integrated On-Board I/O: The controller includes 8 digital inputs with interrupt capability (response time 50 µs) and 8 digital outputs (0.5 A, response time 500 µs). These on-board I/Os enable direct connection of sensors and actuators, reducing the need for additional I/O modules in smaller applications.
• Flexible I/O Expansion: For larger systems, the CML75 supports direct side‑by‑side arrangement of Inline I/O modules. Alternatively, distributed I/O stations can be integrated via fieldbus, providing scalability from a few dozen to thousands of I/O points.
• Multi-Protocol Real-Time Communication: The platform supports a comprehensive suite of industrial communication protocols: Sercos III (primary interface for motion control), PROFIBUS-DP, PROFINET, Ethernet TCP/IP, EtherNet/IP, and OPC UA. Sercos III provides deterministic, high‑speed data transfer with precise synchronization for multi‑axis motion tasks.
• Modular Expansion with Function Modules: Optional function modules for communication, technology (e.g., additional fieldbus interfaces, encoder evaluation), and safety (SafeLogic) can be added to extend the platform’s capabilities. SafeLogic modules enable integrated safety functions such as emergency stop and safe speed limits.
• Real-Time Deterministic Performance: The VxWorks real‑time operating system, combined with the multi‑core CPU architecture, ensures deterministic cycle times and predictable behavior, which is critical for demanding motion control and CNC applications. The system supports up to 64 axes of coordinated motion control.
• Robust Industrial Design: The controller is rated IP20 and must be installed in a control cabinet. It operates reliably in ambient temperatures from +5°C to +55°C, with a relative humidity range of 5% to 95% (non-condensing). It withstands shocks of up to 15 g (EN 60068-2-27) and is CE and UL/cUL certified.
• Integrated Diagnostics and Maintenance Features: A built‑in LCD display and multi‑color LEDs provide local status and diagnostic information. The controller supports remote diagnostics via OPC UA and includes power failure, watchdog, and temperature monitoring functions. A Flash card slot facilitates easy firmware updates, data logging, and program backup.

Applications

The CML75 series is ideal for a wide range of industrial automation and motion control applications, including CNC machine tools (milling, turning, drilling, grinding), packaging machinery, printing presses, robotics, assembly systems, food processing equipment, and general factory automation requiring high‑performance PLC, motion, and CNC functionality.