Mitsubishi AX21EU PLC CPU Module with Integrated I/O for MELSEC-F FX3S Series

The Mitsubishi AX21EU (AX21EU) is an entry-level programmable logic controller central processing unit with integrated input and output channels, designed for the MELSEC-F FX3S series and equivalent to the FX3S-14MR/DS. This compact controller provides a total of 14 integrated points, consisting of 8 digital inputs supporting 24 V DC sink and source logic alongside 6 digital outputs utilizing normally open relay contacts. The relay outputs handle up to 2 A at 240 V AC or 30 V DC with a 10-millisecond response time, delivering dependable switching for industrial machinery and automation systems. Equipped with 4,000 steps of EEPROM program memory, the unit supports an overall connection capacity of up to 30 I/O points. Connectivity features include an integrated USB port for direct programming, standard screw terminal blocks for field input and output wiring, and Recommended Standard 422 communication capability. Powered by a 24 V DC power supply, the module is engineered for mounting on standard 60 mm wide DIN rail, offering flexible installation in control cabinets for small-scale automation tasks and equipment control.