Allen-Bradley 1769-AENTR CompactLogix EtherNet/IP Adapter

Configured for distributed I/O integration in CompactLogix controller platforms, the Allen-Bradley 1769-AENTR (1769-AENTR EtherNet/IP Adapter) provides direct physical/electrical execution. This module establishes a high-speed communication interface connecting local 1769 Compact I/O expansion banks to a primary Logix Programmable Automation Controller (PAC) via deterministic industrial networks.

Hardware Specifications

Ethernet Interface & Backplane Bus Performance

The module operates as an Ethernet bridge that manages communication traffic between host PACs and local I/O modules. Featuring embedded switch capability, the unit supports dual-port infrastructure designed for Device Level Ring (DLR) and linear topologies. DLR architecture provides single-fault network recovery, which maintains deterministic message delivery if a cable failure occurs. The internal backplane bus interface handles cyclic I/O data updating, module configuration traffic, and fault diagnostics across connected 1769 I/O cards. Firmware compatibility requires Studio 5000 or RSLogix 5000 v20 or higher, utilizing a dedicated Add-On Profile (AOP) for hardware identification and module parameterization.

Frequently Asked Questions

Q: Can the two RJ45 Ethernet ports on the module be configured with distinct IP addresses?

A: No. The two Ethernet ports share a single network interface and operate through an embedded two-port switch. Both physical ports utilize the exact same IP address to facilitate linear and DLR ring topologies.

Q: What software version is required to configure and operate the module?

A: Hardware configuration requires RSLogix 5000 or Studio 5000 software version 20 or higher, along with the corresponding Add-On Profile (AOP) installed in the programming environment.

Q: What are the primary immunity ratings for electromagnetic interference on communication lines?

A: The communication ports withstand Conducted RF immunity up to 10 V rms (150 kHz to 80 MHz), EFT/B immunity up to +/-3 kV at 5 kHz, and Surge transient immunity up to +/-2 kV line-to-earth.

Field Installation Guidelines

During physical installation, secure the adapter module onto a standard 35 mm DIN rail or bolt it directly to a grounded panel using M4 or #8 hardware tightened to a torque of 1.16 Nm (10 in-lb). Maintain proper physical grounding by ensuring the DIN rail connects to the central enclosure ground plane through low-impedance copper conductors. Route all Category 5 industrial Ethernet cabling away from high-voltage power lines, variable frequency drives, and heavy inductive loads to prevent electromagnetic coupling. Shielded twisted-pair (STP) Ethernet cabling must be grounded at cable termination points to maintain compliance with CISPR 11 Class A emission standards and protect against electrostatic discharge (6 kV contact, 8 kV air). Maintain adequate vertical clearance around the module housing to allow natural convection cooling within the 0 to 60 deg C operating range.