We stock Mitsubishi MELSEC-Q. This is a modular PLC system that in addition to digital I/O modules the Mitsubishi AnS also offers analog I/O modules, modules for temperature measurement and temperature control, counters, positioning modules and a large number of various communication modules. All CPUs have built in RAM where the PLC program can be stored. As extra protection there is also a backup battery. When you purchase a Mitsubishi Q CPU from us a new backup battery is always included.