Allen-Bradley

Allen-Bradley 1756-L62 ControlLogix 4 MB Memory Controller

SKU 1756-L62

In stock
  • 12-month warranty
  • Free returns within 30 days

  • Manufacturer: Allen-Bradley

  • Product No.: 1756-L62

  • Country of origin:United States

  • Product Type: ControlLogix Logix5562 Processor

  • Barcode: 8537101190

  • Payment: T/T, Western Union

  • Weight: 350g

  • Dimensions: 145 mm x 35 mm x 120 mm (W x H x D)

  • Shipping port: Xiamen

  • Warranty: 12 months

Allen-Bradley 1756-L62 is a ControlLogix 5560 controller that provides 4 MB of user memory for industrial control and automation applications. The unit processes control tasks, manages system I/O, and supports multi-controller configurations within a standard 1756 chassis. It features an integrated RS-232 serial communication port and utilizes a removable lithium battery module for memory retention and clock support during power-down conditions. Nonvolatile memory storage is expanded via an optional CompactFlash card.

Features

  • Built-in RS-232 serial port for programming and serial communication protocols
  • 4 MB user memory capacity for program logic and data storage
  • Supports up to 250 controller connections
  • Nonvolatile memory backup via optional CompactFlash card
  • Removable lithium battery options (1756-BA1 or 1756-BA2) for memory retention during power interruptions
  • Front panel status indicators for diagnostic and operational monitoring
  • Three-position mode switch (RUN, REM, PROG) for system operational control

Applications

  • Industrial process automation and batch control systems
  • Machine control and discrete manufacturing lines
  • Distributed I/O and multi-chassis control configurations
  • Motion control and axis integration

Technical Specifications

Parameter Specification
Manufacturer Allen-Bradley / Rockwell Automation
Product Family ControlLogix 5560
Catalog Number 1756-L62
User Memory 4 MB
Built-in Ports RS-232 serial port
Controller Connections 250
Nonvolatile Memory CompactFlash card (optional, e.g., 1784-CF128)
Memory Retention / Clock Backup Lithium battery (1756-BA1 for Series A; 1756-BA2 for Series B)
Operating Modes RUN, REM (Remote), PROG (Program)
Status Display 6 LED indicators (RUN, I/O, FORCE, RS-232, BAT, OK)

Connections/Interfaces

Interface Function
RS-232 Port Serial communication interface for DF1, DH-485, ASCII, or programming connections via 1756-CP3 or 1747-CP3 cable
CompactFlash Slot Connector interface for nonvolatile memory card installation
Battery Connector Dedicated terminal connection for 1756-BA1 or 1756-BA2 battery assembly
Backplane Connector Multi-pin chassis connector for power, data, and system bus communication

Installation Guidelines

  • Chassis Mounting: The module can be installed in any available slot of a standard ControlLogix 1756 chassis.
  • Electrostatic Discharge: Handle the device using an approved grounding wriststrap and static-safe workstation to avoid component damage.
  • Battery Maintenance: Verify battery polarity when connecting the 1756-BA1 or 1756-BA2 battery. Replace batteries according to ambient operating temperature schedules to prevent memory loss.
  • Serial Cable Routing: Ensure the serial cable length does not exceed 15.2 m (50 ft) when constructing custom serial interfaces.
  • CompactFlash Handling: Insert or remove the CompactFlash card only when power is disconnected or the area is known to be nonhazardous to prevent electrical arcing.

FAQ

What battery is used for memory retention in the controller?
Series A controllers use the 1756-BA1 battery or 1756-BATM module, while Series B controllers use the 1756-BA2 lithium battery.

How is nonvolatile memory supported on the device?
Nonvolatile memory storage and program backup are supported using an optional CompactFlash card, such as the 1784-CF128.

What serial communication protocols are supported on the built-in port?
The RS-232 serial port supports protocols such as DF1 Master/Slave, DF1 Point-to-Point, DF1 Radio Modem, DH-485, and ASCII.

How many controller connections can the unit maintain?
The device supports up to 250 controller connections.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

Allen-Bradley 1756-L62 ControlLogix 4 MB Memory Controller

Download Open in new tab
Allen-Bradley 1756-L62
Allen-Bradley 1756-L62
Allen-Bradley 1756-L62
1 / 3
Quantity
Call sales Contact
Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
Reviews

More from this brand

Allen-Bradley 1746-IO8 SLC 500 Combination Input and Output Module
1746-IO8Allen-Bradley 1746-IO8 SLC 500 Combination Input and Output Module
Allen-Bradley 1785-L40B PLC-5/40 Controller Processor
1785-L40BAllen-Bradley 1785-L40B PLC-5/40 Controller Processor
Allen-Bradley 1746-BAS SLC 500 BASIC Module
1746-BASAllen-Bradley 1746-BAS SLC 500 BASIC Module
Allen-Bradley 1769-OW8 CompactLogix Relay Output Module
1769-OW8Allen-Bradley 1769-OW8 CompactLogix Relay Output Module
  • Allen-Bradley 1756-L62
  • Allen-Bradley 1756-L62
  • Allen-Bradley 1756-L62
1 3
Only 6 item(s) left in stock
View full details
Product Description
Shipping Returns
Additional details
Reviews

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
United States

Technical knowledge

Manual, pilot and solenoid pneumatic valve actuation methods

Selecting Pneumatic Valve Actuation and Safe States

A practical guide to manual, pilot and solenoid pneumatic valves, covering port functions, monostable and bistable behavior, PLC outputs, safe states, commissioning and fault diagnosis.

Current shunt resistor connected with separate Kelvin sense leads for accurate measurement

Designing Current Shunt Measurements That Stay Accurate

A practical guide to current-shunt measurement covering resistor sizing, high-side and low-side placement, Kelvin sensing, error budgets, thermal effects, protection and commissioning tests.

Two Logix controllers exchanging produced and consumed tags over an industrial network

Engineering Logix Produced and Consumed Tags

A field-ready guide to Logix produced and consumed tags, covering data contracts, RPI selection, connection status, stale-data handling, commissioning and controller-to-controller troubleshooting.

AS-Interface master, power supply and distributed I/O modules arranged for commissioning

Commissioning AS-Interface Networks Without Guesswork

A practical AS-Interface commissioning method covering topology, power and voltage-drop checks, addressing, PLC mapping, fault tests and maintenance records for reliable actuator-sensor networks.

VFD line reactor and output filter selection for industrial motor drives

Selecting Line Reactors and Output Filters for VFDs

Learn how line reactors, harmonic filters, output reactors, dV/dt filters, and sine filters address different VFD power-quality and motor-cable problems—and how to select them safely.

Photoelectric sensor configured for light-on and dark-on switching logic

Light-On and Dark-On Photoelectric Sensor Logic

Learn how light-on and dark-on photoelectric sensor modes interact with through-beam, retroreflective, and diffuse sensing, PNP/NPN wiring, PLC logic, commissioning, and fault detection.