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1756-L61

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The 1756-L61 controller belongs to the ControlLogix 5560 series, providing reliable computing and control capabilities, and supporting clock functionality and memory retention during power outages.
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Technical specifications for 1756-L61

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1756-L61
  • Product Family:
    ControlLogix
  • Clock Support & Power-Down Memory Retention:
    Battery-backed
  • Built-in Communication Ports:
    Serial port
  • Controller Connections:
    250
  • Nonvolatile Memory:
    CompactFlash card
  • Status Display & Indicators:
    6 status indicators
  • Unconnected Buffer Defaults:
    10 (max 40)
  • Controller Tasks:
    32 tasks
  • Programs per Task:
    100 programs per task
  • Weight:
    0.34 kg
  • Estimated shipping dimensions:
    3.5x14x14.5cm
  • 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.
Description
The AB 1756-L61 is a ControlLogix 5560 Controller designed to provide reliable and efficient control performance within industrial automation systems. As part of the ControlLogix 5560 controller family, this module supports stable system operation and dependable control processing, helping maintain consistent automation performance across complex control architectures.

The AB 1756-L61 supports clock functionality and memory retention during power loss through an integrated battery backup system. This battery-backed design ensures that critical operational data and system time information are preserved during power-down conditions, supporting smooth system recovery and reducing the risk of data loss.

This controller is equipped with a built-in serial communication port, allowing direct connection to compatible devices and supporting efficient data exchange within automation networks. The integrated communication capability supports streamlined system configuration and reliable communication performance.

The AB 1756-L61 supports up to 250 controller connections, enabling the controller to manage multiple communication relationships within a control system. This connection capacity supports flexible system integration and helps maintain stable communication performance across various system components.

The controller utilizes a CompactFlash card for nonvolatile memory storage. This memory option allows reliable storage of system programs and configuration data, ensuring data retention and supporting efficient program management. The nonvolatile memory design contributes to dependable system performance and simplified data handling.

The AB 1756-L61 features six status indicators that provide clear and immediate visual feedback regarding controller operation and system status. These indicators help support system monitoring, troubleshooting, and maintenance by allowing operators to quickly identify controller conditions.

The controller also includes default unconnected buffer support of 10, with a maximum capacity of 40. This buffering capability supports communication handling efficiency and helps maintain stable data transfer performance within the control system.
Revisions

Revision Part #

Also known as

1756-L61 Ser A
1756-L61/A, Series A, Rev A
1756-L61 Ser B
1756-L61/B, Series B, Rev B
Alternative Names
1756-L61/A 1756-L61/B 1756-L62 1756-L63 1756 L61S
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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.
Which series does the 1756-L61 controller belong to?
The 1756-L61 belongs to the Allen-Bradley ControlLogix 5560 series, suitable for medium to large industrial automation control systems.
What communication networks does the controller support?
The 1756-L61 supports multiple industrial communication networks, including EtherNet/IP, ControlNet, DeviceNet, Data Highway Plus, Remote I/O, SynchLink, and third-party process and device networks.
Does the 1756-L61 have built-in communication interfaces?
Yes, it has 1 built-in RS-232 serial communication port, supporting various serial communication protocols.
Which serial communication protocols does the controller support?
The serial port supports ASCII, DF1 full/half-duplex, DF1 radio modem, DH-485, and Modbus communication via user logic.