Home / Mitsubishi Electric (Factory Automation) / Mitsubishi MELSEC I/OLINK, MELSECNET & A-Series Network Modules / A1SJ71AT23BQ Mitsubishi MELSEC-Q Series MELSECNET(II)(/B)

Available on request

A1SJ71AT23BQ Mitsubishi MELSEC-Q Series MELSECNET(II)(/B)

MPN: A1SJ71AT23BQ · Brand: Mitsubishi Electric (Factory Automation)

Price on request

Discontinued by Mitsubishi Electric (Factory Automation) — we can still source the original A1SJ71AT23BQ (new, used or refurbished, subject to availability). Request a quote below.

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12-month warranty (new) · 3-month (used/refurbished)

30-day returns, no restocking fee on unused parts

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Quick facts

Availability	Confirmed on request
Category	Mitsubishi MELSEC I/OLINK, MELSECNET & A-Series Network Modules
Lifecycle	Discontinued
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

Can I still buy the A1SJ71AT23BQ now that it is discontinued?

Yes. Mitsubishi Electric (Factory Automation) has discontinued the A1SJ71AT23BQ, but sourcing discontinued parts is what PartnerPLC specialises in — new old stock, used and refurbished units. Request a quote and we'll confirm availability, condition and lead time.

When can A1SJ71AT23BQ be shipped?

A1SJ71AT23BQ is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up A1SJ71AT23BQ in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for A1SJ71AT23BQ and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for A1SJ71AT23BQ, subject to availability and destination.

The Mitsubishi Electric A1SJ71AT23BQ is a MELSECNET(II)(/B) in the MELSEC-Q Series. MELSECNET/B local station, shielded twisted pair cable, single bus. Mitsubishi Electric has discontinued it (2018/09 Discontinued); PartnerPLC sources discontinued Mitsubishi parts on the surplus market for maintenance of existing machines. Specifications and manuals below are Mitsubishi Electric's own data.

Specifications

Product

Series	MELSEC-Q Series
Category	MELSECNET(II)(/B)
Type	Twisted pair
Sales status	2018/09 Discontinued (Mitsubishi Electric)
Outline	MELSECNET/B local station, shielded twisted pair cable, single bus

Specifications

Data link system	Shielded twisted pair cable data link system
Maximum number of link points per station: Input (X) / Output (Y)	Up to the maximum number of I/O points for the CPU module used in the master station is applicable. (The total number of link points for slave station is equal to the number of link using points for the master station)
MELSECNET mode: Maximum link points in a system: Link relay (B)	1024 points, 128 bytes
MELSECNET mode: Maximum link points in a system: Link register (W)	1024 points, 2048 bytes
MELSECNET mode: Maximum link points per station: Master station / Local station	1024 bytes
MELSECNET mode: Maximum link points per station: Remote I/O station	512 bytes Number of I/O points: 512 points
MELSECNET II mode: Maximum link points in a system: Link relay (B)	4096 points, 512 bytes
MELSECNET II mode: Maximum link points in a system: Link register (W)	4096 points, 8192 bytes
MELSECNET II mode: Maximum link points per station: Master station / Local station	1024 bytes (First half of link parameters) 1024 bytes (Latter half of link parameters)
MELSECNET II composite mode: Maximum link points in a system: Link relay (B)	4096 points, 512 bytes
MELSECNET II composite mode: Maximum link points in a system: Link register (W)	4096 points, 8192 bytes
MELSECNET II composite mode: Maximum link points per station: Master station / Local station	1024 bytes (First half of link parameters) 1024 bytes (Latter half of link parameters)
MELSECNET II composite mode: Maximum link points per station: Remote I/O station	512 bytes Number of I/O points: 512 points
Communication speed	125 kbps/250 kbps/500 kbps/1 Mbps
Communication method	Half duplex bit serial method
Synchronization method	Frame synchronization method
Network topology	Bus method
Overall cable distance	Changed due to communication speed (125 kbps: 1200 m, 250 kbps: 600 m, 500 kbps: 400 m, 1 Mbps: 200 m)
Number of connected stations	Maximum 32 stations (Master station: 1, The total number of local stations and remote I/O stations: 31)
Modulation method	NRZI method
Transmission format	HDLC compliant (frame type)
Error control system	Retries based on CRC (X 16 + X 12 + X 5 + 1) and timeover
Communication cable	Shielded twisted pair cable
Applicable connector	Terminal block
Number of occupied I/O points	32 points (I/O assignment: Intelligent 32 points)
Internal current consumption (5 V DC)	0.66 A
External dimensions: Height	130 mm
External dimensions: Width	34.5 mm
External dimensions: Depth	93.6 mm
Weight	0.22 kg

Downloads & documentation

Official documents from Mitsubishi Electric (Factory Automation), downloaded directly from the manufacturer.

Data sheets & manuals

MELSECNET,MELSECNET/B Local Station Data Link Module User's Manual (SH-080670ENG-F)	PDF · 4.32MB
MELSECNET,MELSECNET/B Local Station Data Link Module User's Manual (Hardware) (IB-0800372E-E)	PDF · 0.51MB

12-month warrantyon all new stock

3-month warrantyon used & refurbished parts

30-day returnsno restocking fee on unused parts

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