Mitsubishi A3HCPUP21 — The A3HCPUP21 from Mitsubishi is a CPU module within the A Series, equipped with a MELSECNET function

Part number	A3HCPUP21
Brand	Mitsubishi
Category	PLC Processor
Description	The A3HCPUP21 from Mitsubishi is a CPU module within the A Series, equipped with a MELSECNET function
Manufacturer	Mitsubishi
Product Line	A Series
Part Number	A3HCPUP21
Weight	2.69 lbs (1.22 kg)
Description	CPU Module
MELSECNET function	Yes
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
Memory capacity	Max. 144k bytes
Program capacity for Main sequence program	Max. 30k steps
5 VDC internal power consumption	3.7A
External dimensions (HxWxD)	250 x 79.5 x 121 mm
Control system	Stored program and repeated operation
Optical Data Link	Yes

The A3HCPUP21 from Mitsubishi is a CPU module within the A Series, equipped with a MELSECNET function. It features a total of 2048 I/O points, supporting dual control modes, and allowing for adaptability in various automation 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.