Allen-Bradley 1761-NET-AIC MicroLogix and SLC Communication Adaptor

The Allen-Bradley 1761-NET-AIC facilitates seamless communication between DF1-compatible devices and DH-485 networks. This advanced interface converter acts as a bridge for several legacy controller families. Specifically, it supports MicroLogix 1000, 1200, and 1500 units alongside SLC 5/01, 5/02, and 5/03 processors. The hardware performs essential signal conversion between RS-232 and RS-485 electrical standards. Furthermore, the module provides optical isolation to protect sensitive electronics from ground loops. This makes it an ideal solution for connecting distributed controllers across expansive factory floors.

Flexible Connection and Port Configuration

Versatility defines the port layout of this communication adaptor. The unit features an 8-pin mini-DIN connector and a 9-pin D-shell port for RS-232 connections. Additionally, a Phoenix-style plug handles the DH-485 network wiring directly. Users can manually adjust the data transmission rate via a front-mounted selector switch. This ensures compatibility with various baud rate requirements across different industrial systems. The device also supports point-to-point isolation and ASCII protocol bridging. Consequently, it simplifies the integration of Logix-based controllers when used with 1756-DH485 modules.

Power Management and Installation

The 1761-NET-AIC offers two distinct methods for receiving operational power. Users can provide 24V DC through an external power supply for standalone operation. Alternatively, the module can draw power directly from a connected communication cable. A dedicated toggle switch allows users to select between these “External” or “Cable” power modes. This flexibility accommodates diverse installation environments where power access might be limited. Regarding mounting, the compact 0.2 kg housing supports both standard DIN rail and direct panel installation.

Technical Specifications