R04CPU - Mitsubishi Programmable Controllers Melsec

Engineered for ultra-fast control, the Mitsubishi R04CPU delivers exceptional processing speed with a cycle time of just 0.98 ns for LD instructions and 1.96 ns for MOV commands. This standard CPU-type PLC offers 40K steps of program memory, capable of executing large-scale logic sequences without compromising on response time. With support for up to 4096 local I/O points and a total of 12288 I/O points when combined with remote modules, it is built for complex, high-volume industrial environments such as process automation, automotive systems, and large-scale machine networks.

Part of the powerful MELSEC iQ-R Series, the R04CPU integrates seamlessly into modern plant architectures through its built-in Ethernet port, enabling real-time data exchange across SCADA systems, MES layers, or other PLCs. Its compact footprint—27.8 mm width, 110 mm depth, 106 mm height—along with a lightweight body of 0.2 kg, allows for dense mounting in control cabinets. The unit comes with a buffer battery for safe program retention during outages and meets global industrial standards with CE, UL/cUL, and UKCA compliance.

Trusted for mission-critical operations, the R04CPU is also approved by leading marine bodies such as ABS, BV, DNV GL, LR, NK, and RINA, ensuring its durability in harsh environments. Whether you're upgrading your existing PLC infrastructure or building a high-performance automation solution from scratch, this Mitsubishi CPU provides industry-grade speed, safety, and scalability.

The Mitsubishi R04CPU PLC is ideal for advanced automation systems such as multi-axis machine control, distributed I/O systems, process plants, and automotive production lines. Its ultra-fast cycle time and high I/O capacity make it a top choice for high-speed and high-reliability applications.

In a large manufacturing setup, the R04CPU can simultaneously monitor thousands of I/O points—detecting signals from photoelectric sensors, initiating motor drives, and processing PLC logic in microseconds. The integrated Ethernet port allows seamless communication with upper-level systems, while the massive memory allows for complex ladder, function block, or structured text logic programming. The buffer battery ensures your logic and settings are retained even in case of unexpected power failures.

Indian automation engineers can rely on this model for critical applications in chemical plants, food & beverage automation, packaging lines, and OEM machine control. Whether you’re a junior engineer programming your first high-performance logic controller, or a senior systems integrator working on advanced infrastructure, the R04CPU offers the stability, certification, and processing power you can trust for the long haul.