AB 1772-LN2
AB 1772-LN2
AB 1772-LN2
AB 1772-LN2
AB 1772-LN2
AB 1772-LN2
Ask our team:
  • Phone: +86 181 0690 9650
  • E-Mail sales1@apterpower.com

1772-LN2

/ 4.9
1001 reviews | Need a Specific Revision?
Allen-Bradley 1772-LN2 provides 1,024 words of CMOS memory with an adjustable 48–128-word data table for legacy Mini-PLC-2 applications.
In Stock
Ships by Wednesday, October 28
Fast Shipping Available
Get a quick price for 1772-LN2
Quantity
*E-mail
Company
*Mobile
*Content
Upload (gif, jpg, jpeg, png, bmp, doc, docx, xls, xlsx, ppt, pdf, csv)

Technical specifications for 1772-LN2

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1772-LN2
  • Product Family:
    Allen Bradley PLCs
  • Product Type:
    Mini-PLC-2 Processor
  • Stock:
    1
  • Memory Capacity:
    1,024 words
  • Factory Data Table:
    128 words
  • Minimum Data Table:
    48 words
  • Memory Areas:
    Data table, user program, and optional message storage
  • Program Format:
    Ladder diagram instructions
  • Dimensions:
    4.6 × 14.5 × 27.5 cm
  • Memory Type:
    Read/Write CMOS
  • I/O Platform:
    Bulletin 1771 I/O racks and modules
  • Programming Terminals:
    1770-T1, 1770-T2, or 1770-T3
  • Programming Panel Compatibility:
    1772-T1, or 1774-TA with 1772-T4
  • Network Compatibility:
    Allen-Bradley Data Highway through a 1771-KA Communication Adapter Module
  • Communication Compatibility:
    Data Highway and RS-232-C interfacing
  • Scan Operation:
    Program scan and I/O scan using input and output image tables
  • Weight:
    1.24 kg
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Memory Planning Addressing Replacement Control Application
  • Functions as the central processor in a Mini-PLC-2 control system
  • Executes the stored ladder program and coordinates assigned 1771 I/O
  • Requires the original rack addressing and application backup during replacement

1772-LN2 serves as the central Mini-PLC-2 processor, executing the ladder application while coordinating the input and output image for the connected 1771 I/O.

Its 1,024-word memory is shared by the data table, user program, and optional message storage, so the installed memory allocation must be preserved when the processor is replaced.

Before returning the system to service, restore the verified program, confirm rack addressing and I/O assignments, and validate the original timers, counters, messages, and machine sequence.

Availability, condition, price, and shipping time for 1772-LN2 are confirmed during quotation.

Allen-Bradley 1772-LN2 Mini-PLC-2 Processor Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • The official Mini-PLC-2 documentation identifies 1,024 words of memory for 1772-LN2.
  • The factory data table is 128 words and may be reduced within the documented limits.
  • User-program and message-storage capacity depends on the selected data-table allocation.
  • Input and output image tables connect field status to the ladder program.
  • Timer and counter preset and accumulated values occupy defined data-table areas.
  • The retained program must use the same documented PLC-2 memory-address structure.
  • Back up the complete application before removing the installed processor.
  • Record the data-table allocation and I/O addresses used by the machine.
  • Confirm the full catalog number rather than selecting only by memory size.
  • Maintenance of machines built around the documented Mini-PLC-2 processor architecture.
  • Legacy ladder-control applications using PLC-2 memory and image-table addressing.
  • Like-for-like processor replacement where the original application can be restored and validated.
Description
Allen-Bradley 1772-LN2 is a Mini-PLC-2 processor catalog with 1,024 words of memory for compact PLC-2 control applications.

Its factory data table uses 128 words and can be reduced to 48 words so more memory remains available for the user program or message storage.

For a replacement, preserve the memory organization, addressing, installed program, I/O arrangement, and the complete processor catalog identification before removing power.
Alternative Names
1772-LN2 Allen-Bradley 1772-LN2 Allen Bradley 1772-LN2 Mini-PLC-2 1772-LN2 1772-LN2 Mini-PLC-2 Processor Bulletin 1772-LN2
Technical notes
1772-LN2 replacement requires the exact Mini-PLC-2 catalog, preserved program, memory organization, chassis addressing, and I/O layout; a memory-capacity match alone does not establish processor compatibility.
Exceptional Service

Our Mission

  • 100% Satisfaction

    We believe expertise is priceless. With over 20 years of experience, and top engineers on staff, we can help you solve or avoid problems that threaten your business.
  • Trust Guaranteed

    Not only do we have a vast inventory, our team makes sure every piece of equipment is in working condition. Your purchases are also backed by our Warranty.
  • Expertise

    Time is money, especially when your equipment is down. We work quickly to get your equipment on its way so you can get it back up and running.

FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How should a buyer confirm that Allen-Bradley 1772-LN2 matches an installed Mini-PLC-2 processor?
Compare the complete catalog number, processor generation, memory organization, chassis arrangement, I/O addressing, and the saved application before ordering.
What application records should be preserved before replacing Allen-Bradley 1772-LN2?
Keep a verified program backup together with the data-table layout, I/O addresses, timer and counter use, message storage, and any machine-specific operating notes.
Can Allen-Bradley 1772-LN2 be selected only by its 1,024-word memory capacity?
No. Memory capacity is only one check; the processor catalog, chassis, programming interface, addressing method, and installed application must also match.
Why might an Allen-Bradley 1772-LN2 replacement reject an existing program?
An incompatible memory layout, addressing configuration, program size, or corrupted backup can prevent correct loading or execution.
What should be inspected on an Allen-Bradley 1772-LN2 before commissioning?
Inspect the connectors, keying, chassis seating, program backup, power arrangement, indicators, and the I/O image against the documented machine configuration.
Does Allen-Bradley 1772-LN2 require the original program for a practical replacement?
Yes. The processor hardware does not recreate the machine logic; a verified application and its associated data organization are required.
What is the main selection risk when sourcing Allen-Bradley 1772-LN2?
Confusing a memory-capacity reference with full processor interchangeability can lead to an unusable replacement, so the complete installed catalog and application must be checked.