Mitsubishi A3MCPUP21 — The A3MCPUP21 is a CPU module from Mitsubishi's A Series, featuring advanced processing capabilities and robust communication options

Part number	A3MCPUP21
Brand	Mitsubishi
Category	PLC Processor
Description	The A3MCPUP21 is a CPU module from Mitsubishi's A Series, featuring advanced processing capabilities and robust communication options
Manufacturer	Mitsubishi
Product Line	A Series
Part Number	A3MCPUP21
Weight	1.25 lbs (0.57 kg)
Description	CPU Module
Processing Speed (Sequence Instruction)	0.1 µs/step
Basic Programming Support	Built into the CPU
Processor Type	32-bit RISC processor
Selectable I/O Control Mode	Refresh/direct method
Programming Language	Language dedicated for sequence control (Relay symbol, logic symbolic language)
I/O Points	2048 points
Constant Scanning	Selectable between 10ms and 190ms in 10ms units
Program Capacity for Main Sequence Program	Max. 60k steps
External Dimensions (HxWxD)	250 x 79.5 x 121 mm
Network Compatibility	Supports MELSECNET/10 and MELSECNET/II networks
Communication Ports	RS-232C and RS-422/485 for serial communication
Operating Temperature Range	0°C to 55°C
CPU Fiber Link	Fiber optic communication for fast data transfers and noise immunity

The A3MCPUP21 is a CPU module from Mitsubishi's A Series, featuring advanced processing capabilities and robust communication options. This module operates with a sequence instruction processing speed of 0.1 µs per step and supports up to 2048 I/O points, making it well-suited for complex control systems.

Compatibility data for this part number is being verified. Send an RFQ with your equipment model and serial — our suppliers confirm fitment before quoting.

Data compiled from 1 verified source. Last reviewed 2026-08-16.