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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.

Modular PLC

The modular concept

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.


This CPU enables detailed instrument control, and is compatible with simple control as well as complex loop control.


This CPU increases the system’s reliability by offering a parallel standby system consisting of the CPU module, power supply module, main base unit and network module.


This motion controller realizes high-speed control of up to 32 axes with one CPU with the same size as the Q series PLC CPU. In addition, up to three CPU modules and 96 axes can be controlled with the multiple CPU system.