1764-LRP | Allen-Bradley MicroLogix 1500 Processor with 14 KB Memory and Dual RS-232 Ports
1764-LRP | Allen-Bradley MicroLogix 1500 Processor with 14 KB Memory and Dual RS-232 Ports
1764-LRP | Allen-Bradley MicroLogix 1500 Processor with 14 KB Memory and Dual RS-232 Ports
    1764-LRP | Allen-Bradley MicroLogix 1500 Processor with 14 KB Memory and Dual RS-232 Ports
1764-LRP | Allen-Bradley MicroLogix 1500 Processor with 14 KB Memory and Dual RS-232 Ports

1764-LRP | Allen-Bradley MicroLogix 1500 Processor with 14 KB Memory and Dual RS-232 Ports

Part #: 1764-LRP Manufactured by: Allen-Bradley
$685.00
$685.00
2 in Stock
Condition: New – Open box
Shipping calculated at checkout.
Product Overview
The 1764-LRP is an Allen-Bradley manufactured MicroLogix 1500 module that functions as a processor unit. The 1764-LRP has ...  Read more
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Product Description P/N: 1764-LRP

Description / Specifications

Description

The Allen-Bradley 1764-LRP is a MicroLogix 1500 processor designed for compact automation systems that require flexible communication and reliable logic execution. It provides 14 KB of user memory and dual RS-232 ports supporting DF1, DH-485, Modbus, and ASCII protocols. With fast program execution, broad I/O expansion capability, and integrated diagnostic features, it is well-suited for small to mid-sized control applications.

 

 

Technical Specifications

Condition New/Never Used Surplus
Brand Allen-Bradley
Category PLC Controllers
Part Number 1764-LRP
Subcategory MicroLogix Controllers
Series MicroLogix 1500
Memory 14 KB user memory (10 KB program, 4 KB data)
Processor Type MicroLogix 1500 CPU
Communication Ports 2 × RS-232
Supported Protocols DF1, DH-485, Modbus, ASCII
Bus Current Draw 380 mA
Heat Dissipation 1.9 W
Supported Base Units 1764-AWA, 1764-BWA, 1764-BXB
Expansion I/O Capacity Up to 512 points
Communication Topology Point-to-point RS-232
Output Types Relay and DC FET (via base unit)
Real-Time Clock Supported through base unit
Data Logging 48 KB internal buffer
Enclosure Type IP20 open enclosure
Operating Temperature 0–60°C
Mounting DIN rail
Battery 1747-BA lithium battery
Manufacturer Rockwell Automation

  

 

Information About 1764-LRP

The 1764-LRP is part of the MicroLogix 1500 controller family, offering enhanced memory capacity and versatile communication options compared to earlier models. It supports up to eight local expansion modules and up to 512 total I/O points through local and remote I/O banks. The unit includes two independently configurable RS-232 channels that enable peer-to-peer communication, HMI/SCADA connectivity, and serial networking. The processor integrates trim potentiometers, a mode switch, a communication toggle, and real-time clock support, providing a complete processing solution when combined with a compatible 1764 base unit.

Key Features:

  • 14 KB User Memory: Provides 10 KB for program and 4 KB for data storage in Series C units.
  • Dual RS-232 Ports: Supports DF1, DH-485, Modbus, and ASCII for flexible serial communication.
  • Fast Program Execution: Processes 1K words of instructions in approximately 1 millisecond.
  • Expandable Architecture: Supports up to eight local I/O modules and 512 total I/O points.
  • Integrated Diagnostics: Includes mode switch, communication toggle, LED indicators, and trim potentiometers.
  • Data Logging Capability: Supports event- or time-based data logging with up to 48 KB storage.
  • DIN-Rail Mountable: Designed for simple panel installation with MicroLogix base units.
  • Battery-Backed Memory: Uses replaceable 1747-BA battery with warning indication for timely replacement.

The 1764-LRP delivers the reliability and precision required for compact PLC control in distributed or standalone industrial applications.

Frequently Asked Questions about 1764-LRP
Question: What is the 1764-LRP MicroLogix 1500 Processor?
Date Update:04/06/2025
Answer:

The Allen-Bradley 1764-LRP is an enhanced processor unit for the MicroLogix 1500 Programmable Logic Controller (PLC) series. It offers advanced features compared to the standard 1764-LSP processor, including increased memory capacity and additional communication capabilities. This processor is designed for small to medium-sized automation applications requiring reliable control and communication.

Question: What are the key specifications of the 1764-LRP processor?
Date Update:04/06/2025
Answer:

Key specifications of the 1764-LRP include:

  • Memory: 14K user words (10K program, 4K data).
  • Communication Ports: Two RS-232 ports supporting DF1, DH-485, Modbus, and ASCII protocols.
  • Operating Temperature: 0°C to 55°C (32°F to 131°F).
  • Storage Temperature: -40°C to 85°C (-40°F to 185°F).
  • Humidity: 5% to 95% relative humidity (non-condensing).
  • Vibration: Operating: 5G at 10–500 Hz; Relay Operation: 2G.
  • Shock: Operating: 30G panel mounted; 15G DIN rail mounted.
  • Power Consumption: 1.9 watts

These specifications make the 1764-LRP suitable for a wide range of industrial applications.

Question: What communication protocols are supported by the 1764-LRP?
Date Update:04/06/2025
Answer:

The 1764-LRP supports the following communication protocols:

  • DF1: Allen-Bradley's proprietary protocol for communication between devices.
  • DH-485: A robust protocol for peer-to-peer and multi-drop communication.
  • Modbus RTU: A widely used protocol for industrial automation systems.
  • ASCII: Standard protocol for communication with various devices.

These protocols enable versatile communication options for integrating the 1764-LRP into diverse automation systems.

Question: What are the expansion capabilities of the 1764-LRP processor?
Date Update:04/06/2025
Answer:

The 1764-LRP processor supports the following expansion options:

  • Expansion I/O Modules: Up to 512 I/O points can be added using 1769 Compact I/O modules.
  • Communication Modules: Modules such as the 1764-SDN can be used for DeviceNet communication, allowing the connection of up to 63 slave devices.
  • Memory Modules: The 1764-LRP supports memory modules for program and data backup.
  • Real-Time Clock Modules: Modules like the 1764-RTC can be added for time-stamping data and scheduling tasks.

These expansion capabilities provide flexibility to tailor the 1764-LRP to specific application requirements.

Question: What is the lifecycle status of the 1764-LRP processor?
Date Update:04/06/2025
Answer:

As of May 12, 2017, the 1764-LRP processor has been discontinued by Rockwell Automation and is no longer available for sale. Customers are encouraged to consider alternative solutions for their automation needs. While the 1764-LRP is no longer in production, it remains a reliable option for existing systems and can be found through surplus and refurbished equipment suppliers.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description

The Allen-Bradley 1764-LRP is a MicroLogix 1500 processor designed for compact automation systems that require flexible communication and reliable logic execution. It provides 14 KB of user memory and dual RS-232 ports supporting DF1, DH-485, Modbus, and ASCII protocols. With fast program execution, broad I/O expansion capability, and integrated diagnostic features, it is well-suited for small to mid-sized control applications.

 

 

Technical Specifications

Condition New/Never Used Surplus
Brand Allen-Bradley
Category PLC Controllers
Part Number 1764-LRP
Subcategory MicroLogix Controllers
Series MicroLogix 1500
Memory 14 KB user memory (10 KB program, 4 KB data)
Processor Type MicroLogix 1500 CPU
Communication Ports 2 × RS-232
Supported Protocols DF1, DH-485, Modbus, ASCII
Bus Current Draw 380 mA
Heat Dissipation 1.9 W
Supported Base Units 1764-AWA, 1764-BWA, 1764-BXB
Expansion I/O Capacity Up to 512 points
Communication Topology Point-to-point RS-232
Output Types Relay and DC FET (via base unit)
Real-Time Clock Supported through base unit
Data Logging 48 KB internal buffer
Enclosure Type IP20 open enclosure
Operating Temperature 0–60°C
Mounting DIN rail
Battery 1747-BA lithium battery
Manufacturer Rockwell Automation

  

 

Information About 1764-LRP

The 1764-LRP is part of the MicroLogix 1500 controller family, offering enhanced memory capacity and versatile communication options compared to earlier models. It supports up to eight local expansion modules and up to 512 total I/O points through local and remote I/O banks. The unit includes two independently configurable RS-232 channels that enable peer-to-peer communication, HMI/SCADA connectivity, and serial networking. The processor integrates trim potentiometers, a mode switch, a communication toggle, and real-time clock support, providing a complete processing solution when combined with a compatible 1764 base unit.

Key Features:

  • 14 KB User Memory: Provides 10 KB for program and 4 KB for data storage in Series C units.
  • Dual RS-232 Ports: Supports DF1, DH-485, Modbus, and ASCII for flexible serial communication.
  • Fast Program Execution: Processes 1K words of instructions in approximately 1 millisecond.
  • Expandable Architecture: Supports up to eight local I/O modules and 512 total I/O points.
  • Integrated Diagnostics: Includes mode switch, communication toggle, LED indicators, and trim potentiometers.
  • Data Logging Capability: Supports event- or time-based data logging with up to 48 KB storage.
  • DIN-Rail Mountable: Designed for simple panel installation with MicroLogix base units.
  • Battery-Backed Memory: Uses replaceable 1747-BA battery with warning indication for timely replacement.

The 1764-LRP delivers the reliability and precision required for compact PLC control in distributed or standalone industrial applications.

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