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Allen Bradley 1756-L61 Original Packaging Module in Stock

Brand: Allen Bradley
Model Number: 1756-L61
Part Number: 1756-L61
Type: ControlLogix 2 MB Memory Controller
CPU: 5561
Memory: 2 MB
I/O: 478 bytes
Communications: RS-232, DeviceNet, DH+, ControlNet, EtherNet/IP
Dimensions: 2.54″ x 3.54″ x 1.57″
Weight: 0.35 lbs

  • Product Details
  • FAQs
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The Allen Bradley 1756-L61 is a 2 MB Memory Controller that is part of the ControlLogix family of programmable logic controllers (PLCs). It is a small, rugged, and reliable controller that is ideal for a wide range of applications. The 1756-L61 features a 5561 processor, 2048 Kbytes of user memory, and 478 Kbytes of I/O memory. It can be configured with up to 64 MB of CompactFlash memory for additional storage. The 1756-L61 can be used to control a wide variety of devices, including motors, valves, and sensors. It is also compatible with a variety of communication protocols, including RS-232, DeviceNet, DH+, ControlNet, and EtherNet/IP.


  • 2 MB Memory Controller
  • 5561 Processor
  • 2048 Kbytes User Memory
  • 478 Kbytes I/O Memory
  • 64MB CompactFlash (optional)
  • 128,000 Digital I/O
  • 4,000 Analog I/O
  • 128,000 Total I/O
  • 1200mA @ 5V DC
  • 14 mA @ 24V DC
  • 32 Tasks
  • 100 Programs/Task
  • Event Tasks
  • RS-232 Serial Communication Port


The Allen Bradley 1756-L61 can be used in a wide range of applications, including:

  • Machine control
  • Process control
  • Building automation
  • Transportation
  • Medical devices
  • Military and aerospace
  • And more

Technical Specifications:

  • Dimensions: 4.72″ x 2.95″ x 2.12″
  • Weight: 0.75 lbs
  • Operating Temperature: 32°F to 125°F
  • Storage Temperature: -40°F to 158°F


The Allen Bradley 1756-L61 offers a number of benefits, including:

  • Small, rugged, and reliable design
  • Wide range of applications
  • Compatibility with a variety of communication protocols
  • Easy to use and program
  • Affordable

Q: What are the key features of the Allen Bradley 1756-L61 module?
A: The Allen Bradley 1756-L61 module is known for its high-speed processing capabilities, extensive input/output options, robust construction, and flexible configuration. These features make it suitable for a wide range of industrial automation applications.

Q: What is the compatibility of the 1756-L61 module with other Allen Bradley products?
A: The 1756-L61 module is designed to seamlessly integrate with other Allen Bradley products, ensuring compatibility and easy integration within automation systems. It supports various communication protocols and can communicate with other Allen Bradley modules and controllers.

Q: Can I expand the memory capacity of the Allen Bradley 1756-L61 module?
A: Yes, the 1756-L61 module allows for memory expansion. It provides options to increase the memory capacity based on specific application requirements, enabling the storage of additional program logic or data.

Q: What are the recommended applications for the Allen Bradley 1756-L61 module?
A: The Allen Bradley 1756-L61 module is suitable for a wide range of applications in industries such as manufacturing, oil and gas, power generation, food and beverage, pharmaceuticals, and water/wastewater treatment. It offers the versatility and reliability required for these demanding environments.

Q: Does the Allen Bradley 1756-L61 module come with any warranty?
A: Yes, the Allen Bradley 1756-L61 module is typically covered by a warranty provided by the manufacturer or authorized distributors. The warranty terms and duration may vary, so it is recommended to check with the supplier or refer to the official documentation for specific warranty information.




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