Mitsubishi A73CPUP21 — The A73CPUP21 CPU module from Mitsubishi features a maximum I/O point capacity of 1920

Part number	A73CPUP21
Brand	Mitsubishi
Category	PLC Processor
Description	The A73CPUP21 CPU module from Mitsubishi features a maximum I/O point capacity of 1920
Manufacturer	Mitsubishi
Product Line	A Series
Part Number	A73CPUP21
Weight	14.56 lbs (6.61 kg)
Name	CPU Module
I/O Points	1920 points
Self-Diagnostic Function	Built-in diagnostics
LED Indicators	Status LEDs for power, run, error, and communication
Memory Capacity	Max. 1920k bytes
Program Capacity	Max. 60k steps
Processing Speed (Sequence Instructions)	0.1 µs/step
Communication Ports	RS-232C and RS-422/485 for serial communication
Data Link	MELSECNET/10, MELSECNET(II)
Optical Data Communication	Optical data communication line for high-speed, noise-resistant data transfers
Operating Temperature Range	0°C to 55°C
Storage Temperature Range	-25°C to 75°C
Control System	Sequence program method
I/O Control Mode	Refresh mode
Programming Language	Language dedicated for sequence control (Relay symbol, logic symbolic language)

The A73CPUP21 CPU module from Mitsubishi features a maximum I/O point capacity of 1920. It incorporates built-in diagnostics for effective self-monitoring and is equipped with LED indicators for power status, operational mode, error reporting, and communication channels.

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.