You will get en email confirming that we have received your enquiry.
Given the increasing disruption caused by Coronavirus, we wanted to reassure you that Northern Industrial remains available to support you and your business during these difficult times.With one of the largest stocks of new and obsolete industrial automation parts tested and ready to ship, we are confident we can continue to support you and your business. With robust contingency plans now in place it’s business as usual at Northern Industrial.
Our Customer Support Team will be contactable via phone, live chat and email during extended opening hours of 07:00 am - 09:00 pm Monday to Friday. You can check our stock levels, delivery times and prices online, and our delivery partner, FedEx, is available for express UK and international deliveries.
We take our responsibility to continue supporting manufacturing and vital supply chains during these exceptional circumstances very seriously. Since 1978 our aim has been to minimise downtime across industry, and never has this been more pertinent. We’ll keep you updated with any developments and wish all our customers, partners and suppliers the very best during this challenging period.
Download our Covid-19 risk assessment
Complete the form below to send us a message and one of the team will get back to you. Alternatively you can email us on [email protected]
Complete the form below to schedule a callback. Alternatively you can email us on [email protected]
Mon-Thu: 1AM - 12PM CST
Fri: 1AM - 11AM CST
Customers often ask if our lead times are accurate, and the answer is - yes!
We ship our products all over the world with fast FedEx delivery.
Tracked delivery so you can follow the journey
Securely packed to ensure safe delivery anywhere in the world
Shipping is free throughout Europe with a flat fee of £50/ €60/ $75 for the rest of the world
Free shipping applies to items weighing under 40kg. For heavier items and palette shipments, a bespoke shipping cost will be provided.
Need a part faster than it says online? Get in touch with our customer care team who will be happy to expedite your order where possible.
Select a destination from the drop down below to see the typical lead time for this part to reach any country in the world.
Shipping to: | |
---|---|
Cost: | Standard Delivery - $75 |
Arrival: | 3 days after despatch |
4 days after despatch | FREE Next day delivery |
5 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - €60 |
5 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
9 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
Contact us for accurate shipping information | Contact us for accurate shipping information |
4 days after despatch | Standard Delivery - $75 |
9 days after despatch | Standard Delivery - $75 |
3 days after despatch | FREE Next day delivery |
8 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
5 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - €60 |
4 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
2 days after despatch | FREE Next day delivery |
8 days after despatch | Standard Delivery - $75 |
5 days after despatch | FREE Next day delivery |
5 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
9 days after despatch | Standard Delivery - $75 |
3 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
6 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
9 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
8 days after despatch | Standard Delivery - $75 |
8 days after despatch | Standard Delivery - €60 |
5 days after despatch | Standard Delivery - $75 |
3 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
10 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
8 days after despatch | Standard Delivery - $75 |
3 days after despatch | FREE Next day delivery |
8 days after despatch | Standard Delivery - $75 |
9 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
9 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
11 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
5 days after despatch | FREE Next day delivery |
3 days after despatch | FREE Next day delivery |
2 days after despatch | FREE Next day delivery |
10 days after despatch | Standard Delivery - $75 |
3 days after despatch | FREE Next day delivery |
4 days after despatch | Standard Delivery - $75 |
3 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
6 days after despatch | Standard Delivery - $75 |
4 days after despatch | FREE Next day delivery |
5 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
5 days after despatch | Standard Delivery - $75 |
3 days after despatch | FREE Next day delivery |
7 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
4 days after despatch | FREE Next day delivery |
9 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
8 days after despatch | Standard Delivery - $75 |
9 days after despatch | FREE Next day delivery |
2 days after despatch | FREE Next day delivery |
Contact us for accurate shipping information | Contact us for accurate shipping information |
8 days after despatch | Standard Delivery - $75 |
1 day after despatch | FREE Next day delivery |
4 days after despatch | Standard Delivery - $75 |
8 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
1 day after despatch | Standard Delivery - €60 |
7 days after despatch | Standard Delivery - $75 |
6 days after despatch | Standard Delivery - €60 |
11 days after despatch | Standard Delivery - $75 |
10 days after despatch | Standard Delivery - $75 |
8 days after despatch | Standard Delivery - $75 |
3 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
4 days after despatch | FREE Next day delivery |
Contact us for accurate shipping information | Contact us for accurate shipping information |
4 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
4 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
5 days after despatch | Standard Delivery - $75 |
7 days after despatch | FREE Next day delivery |
4 days after despatch | Standard Delivery - $75 |
3 days after despatch | FREE Next day delivery |
4 days after despatch | Standard Delivery - $75 |
2 days after despatch | FREE Next day delivery |
6 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
4 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
9 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
4 days after despatch | FREE Next day delivery |
3 days after despatch | FREE Next day delivery |
1 day after despatch | FREE Next day delivery |
5 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
8 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
Contact us for accurate shipping information | Contact us for accurate shipping information |
3 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
4 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
9 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
3 days after despatch | FREE Next day delivery |
5 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
8 days after despatch | Standard Delivery - $75 |
4 days after despatch | FREE Next day delivery |
2 days after despatch | FREE Next day delivery |
4 days after despatch | FREE Next day delivery |
6 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
3 days after despatch | FREE Next day delivery |
9 days after despatch | Standard Delivery - €60 |
4 days after despatch | Standard Delivery - €60 |
3 days after despatch | Standard Delivery - $75 |
9 days after despatch | Standard Delivery - $75 |
9 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - €60 |
5 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
9 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
10 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
4 days after despatch | FREE Next day delivery |
8 days after despatch | Standard Delivery - $75 |
6 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
8 days after despatch | Standard Delivery - $75 |
8 days after despatch | Standard Delivery - $75 |
8 days after despatch | Standard Delivery - $75 |
10 days after despatch | Standard Delivery - $75 |
8 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
2 days after despatch | FREE Next day delivery |
3 days after despatch | FREE Next day delivery |
7 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
Contact us for accurate shipping information | Contact us for accurate shipping information |
7 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
9 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
3 days after despatch | FREE Next day delivery |
Contact us for accurate shipping information | Contact us for accurate shipping information |
Contact us for accurate shipping information | Contact us for accurate shipping information |
3 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
3 days after despatch | FREE Next day delivery |
8 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
8 days after despatch | Standard Delivery - $75 |
6 days after despatch | FREE Next day delivery |
4 days after despatch | Standard Delivery - €60 |
5 days after despatch | Standard Delivery - €60 |
10 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
8 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
3 days after despatch | FREE Next day delivery |
4 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
4 days after despatch | FREE Next day delivery |
Contact us for accurate shipping information | Contact us for accurate shipping information |
4 days after despatch | FREE Next day delivery |
Contact us for accurate shipping information | Contact us for accurate shipping information |
3 days after despatch | FREE Next day delivery |
8 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
9 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
5 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
8 days after despatch | Standard Delivery - $75 |
3 days after despatch | Standard Delivery - $75 |
9 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
9 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
Contact us for accurate shipping information | Contact us for accurate shipping information |
8 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
4 days after despatch | Standard Delivery - $75 |
9 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - €60 |
4 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
4 days after despatch | Standard Delivery - $75 |
8 days after despatch | Standard Delivery - $75 |
5 days after despatch | Standard Delivery - €60 |
7 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
3 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
9 days after despatch | Standard Delivery - $75 |
3 days after despatch | FREE Next day delivery |
4 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
3 days after despatch | Standard Delivery - $75 |
4 days after despatch | Standard Delivery - $75 |
9 days after despatch | Standard Delivery - $75 |
9 days after despatch | Standard Delivery - $75 |
8 days after despatch | Standard Delivery - $75 |
Contact us for accurate shipping information | Contact us for accurate shipping information |
Contact us for accurate shipping information | Contact us for accurate shipping information |
4 days after despatch | Standard Delivery - $75 |
7 days after despatch | Standard Delivery - $75 |
8 days after despatch | Standard Delivery - $75 |
New items are independently sourced to ensure you always get the best possible prices, and as you’d expect, have never been used. Due to the age of some of our obsolete items, original packaging seals may be broken. Our sales team are happy to confirm the status of the packaging before purchase. Items classed as new are backed up by Northern Industrial’s renowned comprehensive 2 year warranty. Peace of mind guaranteed!
Refurbished items are used but have been fully refurbished by our expert in-house engineers. This means that all of the key serviceable components have been replaced with high-quality new ones. The items are then cleaned, thoroughly tested and come with a full 2 year warranty.
Get your faulty part repaired with our expert repair service. Our standard repair service offers great value for money while our express service is geared for customers in a breakdown situation. During the repair process, our engineers will perform a full preventative maintenance service to ensure longevity. All of the key serviceable components are replaced with high-quality new ones and the items are then cleaned and thoroughly tested. All repairs are backed by the same great 2 year warranty we provide with new items!
We are authorised distributors for Control Techniques, Danfoss & Beijer. All other new components and parts supplied by us are sourced independently by our expert procurement team and are backed by our renowned comprehensive 2 year warranty. We are not an authorized distributor, reseller or representative for any manufacturer listed on the website.
Here at Northern Industrial we’ve been repairing industrial automation parts for over 40 years. We’ve helped companies big and small overcome downtime with long-lasting repairs, and can help you too! Our repair service includes:
Our unique 'No Fix No Fee' promise is exactly as it sounds. If we can't fix it, you don't pay anything.
If possible we will back up the program and parameters from your faulty unit before proceeding with the repair.
For extra peace of mind, our industrial electronic repairs are backed by an all-inclusive 2 year warranty.
With over 40 years in the automation spares and repairs business, we’ve encountered and fixed almost every fault that can occur on your automation parts.
As well as fixing the fault we also replace all serviceable components such as capacitors, fans and relays so that you can get the maximum lifespan out of your equipment.
Be 100% confident in the quality of our industrial electronic repairs thanks to our ISO 9001 accreditation.
The price you see is the price you pay. With no hidden charges or inspection fees, you can be sure of no hidden nasty surprises.
Whether you go ahead with the repair or not, we return your parts anywhere in the UK and Europe free of charge (subject to size and weight restrictions)
2 year warranty*
Worldwide delivery
Returns accepted
*Manufacturer's warranty does not apply
You will get en email confirming that we have received your enquiry.
One of our team will be in touch to confirm your part(s) specification and condition.
You will receive a comprehensive quote tailored to your specific needs.
All orders are subject to product availability. See our T&Cs.
Ask our team Live Chat | Email | 0800 234 3747
Here is all you need to know
The Mitsubishi A1SJ71T21B is a MelsecNet/B data link module for AnS Series PLCs. This interface module allows the CPU to interface with external devices, such as computers and printers, as well as other PLC CPUs. Although now obsolete, Northern Industrial continue to support users of the A1SJ71T21B data link modules. The module has a 5 VDC current consumption of 0.66 A and can have a maximum of 32 connected stations. For more detailed technical information, please see the performance specifications in the table below.
Part number | A1SJ71T21B |
Max. number of device points allocated to communication linkage per station | B 1024 (128 bytes) W 1024 (2048 bytes) |
Current consumption (5 VDC) | 0.65 A |
Weight | 0.22 kg |
Allowable momentary power failure time | 20 msec |
Communication speeds | 125K bps/250K bps/500K bps/1 M bps |
Communication method | Half duplex bit serial method |
Synchronous method | Frame synchronous method |
Transmission path method | Bus type |
Overall extension distance | Varies according to the communication speed |
Number of connected stations | Max. 32 units (1 master station, 31 local stations) |
Modulation method | NRZI method |
Transmission format | Conforms to HDLC (frame method) |
Error control system | Retry due to CRC (generating polynomial X16 + X12 + X5 + 1) and timeout |
RAS function | Diagnostic function such as host link line |
Connecting terminal | Terminal block |
Applicable cable | Shielded twisted wire pair cable |
Number of occupied I/O points | 32 points |
The below specs apply to this product
Manufacturer | Mitsubishi |
---|---|
Range type | Interface Module |
Range | Melsec AnS Series |
---|
Here are some PDFs you can download