Mitsubishi A1SJ71AR21 — The Mitsubishi A1SJ71AR21 is a data link module suitable for industrial automation applications

Part number	A1SJ71AR21
Brand	Mitsubishi
Description	The Mitsubishi A1SJ71AR21 is a data link module suitable for industrial automation applications
Manufacturer	Mitsubishi
Product Line	A Series
Part Number	A1SJ71AR21
Weight	1.50 lbs (0.68 kg)
Module Type	Data Link Module
Max. Number of Link Points per Station	Up to max I/O points for the CPU used
Internal Current Consumption (5V DC)	0.80A
Number of Occupied I/O Points	32 points
System's Allowable Momentary Power Failure Time	Within 20ms
Communication Speed	1.25Mbps
Communications Method	Half-duplex bit serial
Synchronous Method	Frame synchronous
Transmission Path Method	Duplex loop
Overall Loop Distance	Max. 10km (500m intervals between stations)
Number of Connectable Stations	Max. 65 stations (1 master, 64 local/remote)
Demodulation Method	CMI
Transmission Format	HDLC frame method
Cable Used	3C-2V, 5C-2V equivalent

The Mitsubishi A1SJ71AR21 is a data link module suitable for industrial automation applications. It supports a maximum of 65 connectable stations and features a communication speed of 1.25 Mbps, making it reliable for data transmission in advanced 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.