Home Allen Bradley 1756 Series (ControlLogix)

1756-L61 PLC ControlLogix 5561 2 MB Controller

1756-L61 PLC ControlLogix 5561 2 MB Controller

PLC · ControlLogix 5560

1756-L61
Two-megabyte Logix5561 controller with dedicated I/O memory, an RS-232 serial interface and optional CompactFlash nonvolatile storage. Confirm the exact installed configuration and revision before replacement.

Memory
2 MB
I/O Memory
478 KB
Serial
RS-232
Lifecycle
Discontinued
Application & Order CheckMatch 1756-L61 to the installed configuration
Application Fit
  • Legacy ControlLogix 5560 applications
  • Chassis systems using separate network modules
  • Series-aware maintenance and engineered migration
Verify Before Order
  • Series A or B and matching battery
  • Controller firmware and RSLogix 5000 project version
  • Communication modules, CompactFlash and backplane loading

Scope note: Supplied as a model-specific industrial component; system engineering, accessories and site acceptance are verified separately.

  • Product Condition

    Original New with One Year Warranty
  • Parts Available

    In Stock and Same Day Shipping
  • Delivery Mode

    Shipping via DHL Fedex or UPS etc
  • Email:

    sales1@amikon.cn
  • Whatsapp/Mob:

    +86 18150117685
Description
Technical Product Profile

PLC 1756-L61

Logix5561 programmable controller for ControlLogix 5560

PLCControlLogix 5560Logix5561 programmable controller

Overview

This discontinued ControlLogix 5560-family controller provides 2 MB of application memory and 478 KB of I/O memory for legacy 1756 systems.

The built-in communication interface is RS-232, while Ethernet and other industrial networks require a compatible chassis communication module; hardware series and firmware must be checked during service or migration.

Ordering note: Verify the complete model, installed system, revision and current manufacturer documentation before purchase or installation.

Technical Data & PDF

Controller family / type ControlLogix 5560 Logix5561 controller
Data and logic memory 2 MB
I/O memory 478 KB
Nonvolatile storage Optional CompactFlash card; not supplied with controller
Built-in communication One RS-232 serial port
Controller capacity 32 tasks; 100 programs per task; 250 controller connections maximum
Backplane load / dissipation 1.20 A at 5.1 VDC; 14 mA at 24 VDC; 3.5 W
Environment / enclosure 0–60 °C; 5–95% RH noncondensing; open-style
Rockwell Automation ControlLogix Controllers User ManualReview the current manufacturer information and verify the exact installed configuration before ordering.
Open Manufacturer Information

System Match & FAQ

1756-L61Logix5561 programmable controller
→
1756 BackplaneI/O and communication modules
→
Controller ProjectTasks, programs and serial configuration

Compatibility depends on the complete ordering code, installed hardware, wiring and approved engineering data.

Product FAQ

How is memory divided inside 1756-L61?

It provides 2 MB for data and logic plus 478 KB dedicated to I/O data.

Can 1756-L61 connect directly to an Ethernet network?

Its built-in interface is RS-232, so Ethernet communication requires a compatible network module in the chassis.

Which battery matches the hardware series of 1756-L61?

Series A hardware uses a 1756-BA1, whereas Series B hardware uses a 1756-BA2, so the series marking must be checked before service.

What project software baseline applies to 1756-L61?

Series A requires RSLogix 5000 version 12.06.00 or later, while Series B requires version 13.04.00 or later.

What should be reviewed before migrating from 1756-L61?

Verify firmware compatibility, communication modules, memory handling, backplane loading, and application behavior before moving to a newer controller platform.

Request a Verified Quotation

Send the complete 1756-L61 model, quantity, installed system, destination and clear label photos. Availability and condition will be confirmed before quotation.

Official manufacturer source: Rockwell Automation ControlLogix Controllers User Manual. Final suitability must be verified against the exact installed system and revision.
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