Mitsubishi A1SJ71AP21 — The Mitsubishi A1SJ71AP21 is a data link module designed for robust communication systems

Part number	A1SJ71AP21
Brand	Mitsubishi
Description	The Mitsubishi A1SJ71AP21 is a data link module designed for robust communication systems
Manufacturer	Mitsubishi
Product Line	A Series
Part Number	A1SJ71AP21
Weight	0.63 lbs (0.28 kg)
Device Type	Data Link Module
Maximum Link Points Per Station	Up to the maximum I/O points for the CPU used
Power Consumption (5V DC)	0.33A
Mass	0.30 kg
I/O Points Occupied	32 points
System's Power Failure Tolerance	Within 20 ms
Data Transfer Rate	1.25 Mbps
Communication Protocol	Half-duplex bit serial
Transmission Mode	Duplex loop
Total Loop Length	Max. 10 km (32810 ft), with 1 km station spacing
Maximum Stations in Loop	Max. 65 stations (1 master, 64 local/remote)
Signal Demodulation Technique	CMI
Transmission Protocol	HDLC (frame-based method)
Connector Type	2-core optical connector plug (User-supplied) Yes
Signal Loss per Distance	Max. 12 dB per km

The Mitsubishi A1SJ71AP21 is a data link module designed for robust communication systems. It accommodates up to the maximum I/O points permitted by the associated CPU and maintains a power consumption of 0.33A at 5V DC.

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.