Product Overview

The Allen-Bradley 1769-AENTR acts as the high-speed communication gateway for 1769 Compact I/O modules in a distributed architecture. It enables a CompactLogix or MicroLogix 1500 controller to manage I/O banks over an EtherNet/IP network, eliminating the need for localized controllers in every cabinet. Featuring two Ethernet ports, this adapter provides the necessary infrastructure for resilient, ring-based network topologies. We offer this unit in 100% Brand New original condition, ensuring seamless connectivity for your remote I/O requirements.

Technical Specifications

The 1769-AENTR utilizes a dual-port design to support flexible industrial network cabling and high-speed data throughput.

Engineering Advantages

The 1769-AENTR solves complex wiring challenges and increases system uptime through native support for redundant network paths and modular distribution.

• Device Level Ring (DLR) Resilience: The dual-port design allows for DLR topology. In the event of a single cable failure or break in the ring, the adapter maintains communication through the alternate path, preventing a total system shutdown and ensuring continuous production.

• Cost-Effective Distributed I/O: By using the 1769-AENTR, you can place I/O modules closer to field sensors and actuators. This significantly reduces long-distance multi-core cable runs and minimizes signal degradation associated with analog wiring.

• Seamless Integration: The Logix Designer software (Studio 5000) recognizes the 1769-AENTR natively. You configure the remote I/O as if it were local to the controller, simplifying the tag database and I/O mapping process.

• Versatile Addressing Options: The module supports both static IP addressing via rotary switches or software-based DHCP configuration. This flexibility allows maintenance teams to replace modules quickly without needing specialized programming tools on the plant floor.

• Galvanic Backplane Isolation: The adapter features 750V DC isolation between the network ports and the system backplane. This protects the communication network from electrical noise and ground loops originating at the field-wiring level.

FAQs

• Does the 1769-AENTR require a separate 1769 power supply?

  The 1769-AENTR powers the internal logic but requires a 1769-PA2, 1769-PB2, or 1769-PA4 power supply to provide bus power to the connected I/O modules on the rack.

• How many modules can I connect to one 1769-AENTR?

  A single 1769-AENTR adapter supports a maximum of 8 Compact I/O modules. Ensure your power supply can handle the total current draw of all 8 modules.

• Can I use this adapter with a MicroLogix 1500?

  While the 1769-AENTR can house 1769 modules, it acts as an Ethernet/IP slave. A MicroLogix 1500 would require an Ethernet interface (like a 1761-NET-ENI) and sufficient logic capacity to manage remote I/O nodes, though it is primarily designed for CompactLogix control.

• What is the function of the two Ethernet ports?

  The ports function as an internal switch. You can daisy-chain multiple 1769-AENTR adapters together in a linear fashion or close the loop to form a DLR (Device Level Ring) for network redundancy.