Allen-Bradley 1756-L55M13 ControlLogix 5555 Controller with 1.5MB Memory

Allen-Bradley 1756-L55M13 ControlLogix 5555 Controller with 1.5MB Memory

Price range: $4,885.29 through $7,157.28

The Allen-Bradley 1756-L55M13 is a ControlLogix 5555 controller combination featuring 1.5 MB of user memory via an integrated 1756-M13 memory expansion module. Designed for legacy discrete, process, and motion control applications, it provides reliable processing capabilities across standard ControlLogix chassis architectures. It includes an onboard RS-232 serial port supporting DF1, DH-485, and ASCII protocols for direct local communications and peripheral device connections. Managed via RSLogix 5000 software, the 1756-L55M13 supports Removal and Insertion Under Power (RIUP) to facilitate maintenance without interrupting chassis backplane operations.

$4,885.29
$6,216.12
$7,157.28
SKU: 1756-L55M13 Category: Brand:

Description

  • Part Number: 1756-L55M13
  • Manufacturer: Allen-Bradley
  • Type: ControlLogix 5555 Controller
  • Series: ControlLogix 1756 Series
  • Application: Legacy Plant Process Control Loops
  • Size // Rating: 1.5 MB User Memory, RS-232 Serial Port
  • Connection Type: RS-232 Serial Port / Backplane
  • Compatibility: Allen-Bradley ControlLogix 1756 System

TCI is not an authorized Allen-Bradley distributor.

Warranty Coverage

This product is backed by a TCI Supply 1 year Warranty.

Industrial Repair Services

Need your existing hardware restored? We offer professional diagnostic, refurbishment, and repair services for 1756-L55M13. Contact our team for a quote.

Request Repair Quote

Request a Quote

"*" indicates required fields

This field is for validation purposes and should be left unchanged.

Description

The Allen-Bradley 1756-L55M13 is a classic 5555 Series ControlLogix processor bundle consisting of a 1756-L55 base controller equipped with a factory- or field-installed 1756-M13 memory expansion module. Delivering 1.5 MB of total user application memory, this configuration supports ladder logic, function blocks, sequential function charts, and structured text routines for medium-sized legacy automation lines.

The 1756-L55 platform relies on plug-in memory daughtercards to define total RAM capacity. The installed 1756-M13 expansion board snaps directly onto the controller mainboard, housing volatile RAM memory backed by an external lithium battery (such as the 1756-BA1 or 1756-BATM) to safeguard tags and logic programs during power outages. For direct field interaction, the controller features a front-panel 9-pin RS-232 serial interface supporting DF1 point-to-point, DH-485 network routing, and ASCII messaging for bar code readers and HMI terminals.

Configured using RSLogix 5000 software (firmware versions 8 through 16), the 1756-L55M13 integrates into local and distributed ControlLogix backplanes over EtherNet/IP, ControlNet, and DeviceNet communication modules. Front-panel LED indicators display real-time status for processor execution, serial activity, and battery condition. Supporting full Removal and Insertion Under Power (RIUP), the 1756-L55M13 can be hot-swapped in an active rack without turning off power to surrounding system modules.

Frequently Asked Questions

What is the primary function of the Allen-Bradley 1756-L55M13 controller combination?

The 1756-L55M13 is a ControlLogix 5555 PAC bundle designed to manage discrete logic, process control, and motion synchronization in legacy industrial automation applications.

How is memory provided on the 1756-L55M13?

Memory is provided by installing a 1756-M13 memory expansion card (1.5 MB capacity) onto the base 1756-L55 controller logic board.

What communication ports are built into the 1756-L55M13?

It features an onboard RS-232 serial port supporting DF1 full/half duplex, DH-485, and ASCII protocols for programming, operator interface connections, and device communications.

Which programming software version is required for the 1756-L55M13?

The 1756-L55M13 is programmed using RSLogix 5000 software, supporting firmware revisions up to Version 16.

How does the 1756-L55M13 retain user program memory during power loss?

It utilizes a replaceable lithium battery module (such as the 1756-BA1 or 1756-BATM assembly) connected to the controller to maintain RAM contents when main chassis power is removed.

Related products