MITSUBISHI ELECTRIC Changes for the Better

The core for next-generation automation environment

MELSEC iQ-R Series: As the core for next-generation automation environment, Mitsubishi has realized an automation controller with added value while reducing TCO. The MELSEC iQ-R Series has been developed from the ground up to solve common problems in seven key areas: productivity, engineering, maintenance, quality, connectivity, security and compatibility. Taking a three-point approach to solving these problems: reducing TCO, increasing reliability and reuse of existing assets.

Integrated modular controller

The iQ-R series CPU offers dramatic improvements in performance, setting new benchmark standards for processing speed. This not only enables users to realise enhanced system designs, but also provides the basis for significant reduction in hardware costs. At the same time, the iQ-R series offers reductions in development cost, maintenance cost and risk of system failure, while providing an innovative upgrade path that will enable users to take advantage of ongoing developments through software upgrades rather than hardware upgrades.


With a scan time of 0.14 ms, the ability to process up to 419 instructions per millisecond, and a LD instruction speed of 0.98 ns, the iQ-R series sets new benchmark performance standards, helping to deliver increased productivity.

The iQ-R series offers a synchronised PLC and network scan to avoid data transfer delays and improve manufacturing quality. In addition to that all output modules are synchronized for much more precise control, removing the need for position detect sensors and reducing total system costs.

Important manufacturing information like recipes can be stored in the iQ-R built-in database preventing the whole automation system to stop when for example the network fails and communication to a PC database server stops. iQ-R can also backup/restore all parameters/data of the whole PLC system including CC-Link IE Field network devices.

For example, users can define errors and events to be automatically stored to SD card through the in-built SD card slot. In the case of an error or certain event the PLC can store all relevant process information, the error & event log including operation history to an SD card. This data can then easily be analyzed and help to reduce downtime and maintenance effort.

A feature of the iQ-R series is the ability to plug a hardware security key into the CPU, without which the CPU module will not run. The data held in this key is encrypted, and cannot be copied by outsiders. Further, authorised device IP addresses can be set up, and access denied to unauthorised devices, reducing the risk of hacking or altering of the PLC program by unauthorised personnel. All this is on top of a user authentication function.

More highlights

  • High performance CPU
  • Scalable platform
  • Synchronised control
  • Secure data storage
  • Reduced maintenance effort
  • Seamless connectivity via SLMP communication
  • Efficient engineering – GX Works3
  • System security
  • MELSEC System Q compatibility


Programmable automation controllers suitable for various different applications.

Base unit

The base units are needed for installing devices such as power supply, CPU and I/O modules. Various types are available to suit multiple system requirements.

Power supply

This module is used for providing electrical power to CPU, I/O modules and other modules on the base unit.

I/O module

Devices such as switches, indicator lamps, and sensors can be easily connected to the control system using the digital I/O modules.

Analog I/O module

Analog modules are the main interface between the control process and the automation system and are specifically designed to interface with sensors that process varying voltage and current signals.

Motion, Positioning, High-speed counter module

Distinct set of high-accuracy and fast and intelligent control response modules that are ideal for applications requiring high-speed and precision.

Information/network module

This module group enables information exchange with multiple control systems. The module lineup improves production efficiency by collecting and controlling various production information.