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.
The 1769-AENTR utilizes a dual-port design to support flexible industrial network cabling and high-speed data throughput.
| Parameter | Specification Detail |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Catalog Number | 1769-AENTR |
| Communication Rate | 10/100 Mbps (Auto-negotiation) |
| Network Protocol | EtherNet/IP |
| Ports | 2 Ethernet (RJ45) |
| Module Capacity | Supports up to 8 1769 Compact I/O Modules |
| Input Voltage | 24V DC Nominal |
| Current Draw | 500 mA @ 5V DC |
| Addressing | Static IP or DHCP |
| Dimensions | 118 x 35 x 87 mm |
| Operating Temp | 0°C to +60°C (32°F to +140°F) |
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.
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.
Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.
Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.
We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.