MELSEC-Q Series: its powerful performance takes the Q Series to levels rarely seen by other PLCs before. As the requirements of manufacturing evolve daily, the next generation MELSEC-Q Series, with its nano speed processing, can dramatically improve system and machine performance.

Reliable control when you need it most

Building on its predecessor, the AnSH, SystemQ is a control concept that allows users to mix and select the best combination of CPUs, communication devices, specialist control modules and discreet I/O on a back-plane. This allows users to configure systems into what they need, when they need it, where they need it.

Multiple capabilities

Basic and advanced PLC CPUs, specialist motion and process controllers and even PCs can be combined into a single SystemQ solution with up to four different CPUs. This gives users a choice of control philosophies, programming concepts and programming languages – all from a single platform.

An automation platform for the future

Flexibility and scalability are key design features that enable System Q to truly be a single Automation Platform. Users can apply simple control to an individual machine or integrated plant wide management all from the same hardware base.

What can you expect from Mitsubishi Modular PLCs?

  • Global use
    A wide range power supply means your Modular System Q will work all over the world and with the huge range of shipping approvals, CE compliance, as well as manufacturing to Automotive industry quality levels, SystemQ is a product to trust.
  • Totally scalable
    System Q is designed to grow with your application, from the Q00J standalone solution to the networked and redundant process CPU Q25PRH. System Q's platform concept allows you to add and customize the special functions you need.
  • Multi CPU
    The SystemQ Automation Platform allows you to use multiple CPU’s on a single backplane. You can combine up to four CPU types, such as PLC, Motion, PC, Q-C and Process CPU’s, as a single seamless solution.
  • Multi network connectivity
    From basic AS-Interface to Ethernet based networks, System Q can communicate easily with Mitsubishi or third party products. To increase the productivity in your plant, System Q can also provide a direct connection to any database based on SQL via an Ethernet connection.
  • Flexibility
    The wide range of power supplies, CPU’s, I/O Modules, Special Modules and Communication Modules makes System Q one of the most flexible modular automation systems in the world.
  • Dual redundancy
    The redundant Process CPUs Q12/25PRH can, with standard PLC technology, provide a hot standby system with the automatic synchronization of data. The modular concept also allows different degrees of redundancy from power supply and control systems to redundant network modules.


A PLC CPU lineup that can fit any application.

Base unit

These modules are for mounting devices such as power supply modules, CPU modules and input/output modules. A lineup of base units is available to suit your system needs.

Power supply

These modules supply electrical power for use by the CPU, input/output modules etc.

I/O module

These modules are for connecting input and output devices. Assorted I/O modules are available to suit your system needs.

Analog I/O module

These modules use an analog method for data input/output. They support process control needs and are perfect for high-speed, high-accuracy control.

Pulse I/O module, counter module

This pulse input, high-speed counter unit supports high-resolution devices and can offer high-accuracy control.

Positioning module

Modules for high-speed, high-accuracy positioning control. A variety of positioning modules are available to cater to different customer needs.

Information module

These modules enable information exchange with the host control system, enhancing production efficiency by collecting and controlling various production information.

Control network module

These interface modules provide connectivity to various networks that are found at each FA level of a factory automation system.

Energy measurement module

These energy measurement modules support measuring and monitoring of diverse energy information.
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