1768-L45 | Allen-Bradley CompactLogix L45 Processor, 3MB Memory
1768-L45 | Allen-Bradley CompactLogix L45 Processor, 3MB Memory
1768-L45 | Allen-Bradley CompactLogix L45 Processor, 3MB Memory
    1768-L45 | Allen-Bradley CompactLogix L45 Processor, 3MB Memory
1768-L45 | Allen-Bradley CompactLogix L45 Processor, 3MB Memory

1768-L45 | Allen-Bradley CompactLogix L45 Processor, 3MB Memory

Part #: 1768-L45 Manufactured by: Allen-Bradley
$2,044.00
$2,044.00
10 in Stock
Condition: New – Open box
Shipping calculated at checkout.
Product Overview
Allen-Bradley 1768-L45 CompactLogix L45 Processor, 3 Mbyte Memory, 1-Port RS-232 Serial (DF1 or ASCII)
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Product Description P/N: 1768-L45

Description / Specifications

Description 

The Allen-Bradley 1768-L45 is a CompactLogix™ controller designed for small to medium automation applications requiring reliable logic execution and flexible communication. It offers a modular architecture with four local 1768 slots and an integrated RS-232 serial port supporting multiple DF1 and DH-485 protocols. This controller is widely used in machine control, process systems, and distributed automation environments where robust performance and scalable I/O are essential.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category Programmable Controller
Part Number 1768-L45
Subcategory CompactLogix™ Controller
Memory 3 MB user memory
Integrated Ports 1 × RS-232 serial port
Supported Protocols DF1 (P2P, Master, Slave, Radio Modem), ASCII, DH-485
Local Expansion Slots 4 × 1768 module slots
Expanded I/O Support Up to 30 × 1769 I/O modules
Mounting Type DIN rail or panel mount
Operating Temperature 0…60°C (32…140°F)
Vibration Rating 5 g @ 10–500 Hz
Shock Rating 30 g
Power Consumption 4.34 W
Enclosure Open-style
Communication Cable Compatible with 1747-CP3
Applications Machine control, distributed I/O, CompactLogix L43/L45 systems
Standards / Certifications CCC

  

 

Information About 1768-L45

The 1768-L45 belongs to the CompactLogix 1768 family and provides 3 MB of user memory for control logic, motion, and data handling. It supports up to four 1768-series modules locally and up to thirty 1769 I/O modules through expansion banks, giving significant capacity for distributed installations. The built-in RS-232 port supports DF1 point-to-point, master, slave, radio modem modes, ASCII communication, and DH-485 networking, enabling integration with drives, HMI panels, barcode readers, and legacy networks. The controller includes a front-panel keyswitch for RUN, REMOTE, and PROGRAM mode selection, as well as status LEDs for diagnostics. It can operate with 1768-series communication modules such as EtherNet/IP (1768-ENBT), Web-enabled Ethernet (1768-EWEB), and ControlNet (1768-CNB / CNBR), and also supports SERCOS motion modules for multi-axis applications. Designed for DIN-rail or panel mounting, it operates in temperatures from 0 to 60°C and is built for industrial reliability.

Key Features:

  • Modular Expansion: Supports four local 1768 modules and up to thirty 1769 Compact I/O modules.
  • Large Memory: Offers 3 MB of user memory for motion, logic, and data-intensive applications.
  • Flexible Serial Communication: Integrated RS-232 port supports DF1, DH-485, ASCII, and modem protocols.
  • Wide Network Options: Compatible with EtherNet/IP, ControlNet, and SERCOS modules for system expansion.
  • High Reliability: Includes status LEDs, diagnostic indicators, and robust shock/vibration tolerance.
  • Mode Selector: Front-panel keyswitch enables quick switching between RUN, REMOTE, and PROGRAM modes.
  • Scalable Architecture: Supports distributed I/O across multiple banks for larger machine layouts.
  • Industrial Ruggedness: Operates from 0–60°C and withstands 5 g vibration and 30 g shock.
  • Efficient Power Use: Low power consumption of 4.34 W reduces thermal load in control cabinets.
  • Easy Installation: Designed for DIN rail or panel mounting with required airflow clearances.

The 1768-L45 delivers strong performance and scalability for machine control, process automation, and integrated motion systems.

Frequently Asked Questions about 1768-L45
Question: What is the 1768-L45 used for?
Date Update:05/06/2025
Answer:

The 1768-L45 is a programmable logic controller (PLC) that is used for controlling and automating industrial processes. It is part of the CompactLogix series, offering compact, modular, and scalable solutions for a wide variety of automation applications. It is commonly used in industries like manufacturing, packaging, material handling, and more.

Question: What are the key specifications of the 1768-L45?
Date Update:05/06/2025
Answer:
  • Processor: 1.2 GHz, PowerPC 440 architecture processor.
  • I/O support: Supports up to 8,000 I/O points in a system.
  • Memory: 2 MB of user memory (Flash memory), 128 MB of RAM.
  • Inputs and Outputs: Compatible with 1769 I/O modules, which are modular and scalable.
  • Communication Ports:
    Ethernet/IP port for communication with other devices on the network.
    RS-232 serial port for communication with serial devices or other controllers.
  • Programming Environment: RSLogix 5000 or Studio 5000 software for configuration, programming, and diagnostics.
  • Environment Rating: Operates in 0°C to 60°C (32°F to 140°F) temperature range with a humidity range of 5% to 95% (non-condensing).
  • Mounting: Compact, DIN rail mountable.
Question: Where can I find the user manual or technical documentation for the 1768-L45?
Date Update:05/06/2025
Answer:

The user manual, datasheet, and other technical documentation for the 1768-L45 can be found on the Rockwell Automation website (under the product’s support section) or by contacting their technical support team. These documents include installation guides, configuration details, and troubleshooting steps.

Question: How do I upgrade the firmware of the 1768-L45?
Date Update:05/06/2025
Answer:

Firmware updates for the 1768-L45 are typically done using RSLogix 5000 or Studio 5000. You will need to download the latest firmware version from the Rockwell Automation website and use the software to perform the update. The steps include:

  1. Download the firmware file from the Rockwell Automation website.
  2. Open RSLogix 5000 or Studio 5000 and connect to the 1768-L45 controller.
  3. In the software, navigate to the controller’s properties, and select the option to update the firmware.
  4. Follow the prompts to complete the firmware update. Ensure that the system is not interrupted during the process.
Question: How do I troubleshoot communication issues with the 1768-L45?
Date Update:05/06/2025
Answer:

If you're experiencing communication problems with the 1768-L45, follow these steps:

  • Check IP Settings: Ensure that the IP address of the controller matches the network configuration and does not conflict with other devices.
  • Verify Connections: Ensure that Ethernet cables are securely connected, and there are no loose connections.
  • Check Firmware Compatibility: Verify that the firmware of the controller is up-to-date and compatible with your system.
  • Review Network Settings: Check if there are any network issues, such as switches, routers, or other network devices that could be affecting communication.
  • Use Diagnostics: You can use diagnostic tools in Studio 5000 or RSLogix 5000 to check the health of the communication network.
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 1768-L45 is a CompactLogix™ controller designed for small to medium automation applications requiring reliable logic execution and flexible communication. It offers a modular architecture with four local 1768 slots and an integrated RS-232 serial port supporting multiple DF1 and DH-485 protocols. This controller is widely used in machine control, process systems, and distributed automation environments where robust performance and scalable I/O are essential.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category Programmable Controller
Part Number 1768-L45
Subcategory CompactLogix™ Controller
Memory 3 MB user memory
Integrated Ports 1 × RS-232 serial port
Supported Protocols DF1 (P2P, Master, Slave, Radio Modem), ASCII, DH-485
Local Expansion Slots 4 × 1768 module slots
Expanded I/O Support Up to 30 × 1769 I/O modules
Mounting Type DIN rail or panel mount
Operating Temperature 0…60°C (32…140°F)
Vibration Rating 5 g @ 10–500 Hz
Shock Rating 30 g
Power Consumption 4.34 W
Enclosure Open-style
Communication Cable Compatible with 1747-CP3
Applications Machine control, distributed I/O, CompactLogix L43/L45 systems
Standards / Certifications CCC

  

 

Information About 1768-L45

The 1768-L45 belongs to the CompactLogix 1768 family and provides 3 MB of user memory for control logic, motion, and data handling. It supports up to four 1768-series modules locally and up to thirty 1769 I/O modules through expansion banks, giving significant capacity for distributed installations. The built-in RS-232 port supports DF1 point-to-point, master, slave, radio modem modes, ASCII communication, and DH-485 networking, enabling integration with drives, HMI panels, barcode readers, and legacy networks. The controller includes a front-panel keyswitch for RUN, REMOTE, and PROGRAM mode selection, as well as status LEDs for diagnostics. It can operate with 1768-series communication modules such as EtherNet/IP (1768-ENBT), Web-enabled Ethernet (1768-EWEB), and ControlNet (1768-CNB / CNBR), and also supports SERCOS motion modules for multi-axis applications. Designed for DIN-rail or panel mounting, it operates in temperatures from 0 to 60°C and is built for industrial reliability.

Key Features:

  • Modular Expansion: Supports four local 1768 modules and up to thirty 1769 Compact I/O modules.
  • Large Memory: Offers 3 MB of user memory for motion, logic, and data-intensive applications.
  • Flexible Serial Communication: Integrated RS-232 port supports DF1, DH-485, ASCII, and modem protocols.
  • Wide Network Options: Compatible with EtherNet/IP, ControlNet, and SERCOS modules for system expansion.
  • High Reliability: Includes status LEDs, diagnostic indicators, and robust shock/vibration tolerance.
  • Mode Selector: Front-panel keyswitch enables quick switching between RUN, REMOTE, and PROGRAM modes.
  • Scalable Architecture: Supports distributed I/O across multiple banks for larger machine layouts.
  • Industrial Ruggedness: Operates from 0–60°C and withstands 5 g vibration and 30 g shock.
  • Efficient Power Use: Low power consumption of 4.34 W reduces thermal load in control cabinets.
  • Easy Installation: Designed for DIN rail or panel mounting with required airflow clearances.

The 1768-L45 delivers strong performance and scalability for machine control, process automation, and integrated motion systems.

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