BL194 EtherNet/IP I/O Module

Native EtherNet/IP. Direct to Rockwell. — Expand your ControlLogix or CompactLogix I/O without gateways.

Your Rockwell PLC speaks EtherNet/IP. So does the BL194.

You have a Rockwell Automation control system — ControlLogix, CompactLogix, or Micro800. You need more I/O points. Adding more local I/O racks is expensive. Running long cables back to the PLC is impractical. And you definitely do not want to add a protocol gateway.

The BL194 is built for exactly this scenario. It is a native EtherNet/IP adapter (slave) that communicates directly with your Rockwell PLC using standard EtherNet/IP.

What BL194 Does Best

🔌 Native EtherNet/IP — ODVA Compliant

The BL194 is a standard EtherNet/IP adapter. Supports implicit messaging (real‑time I/O data exchange) and explicit messaging (configuration and diagnostics). Your Rockwell PLC discovers it via EDS file or browse. 

📦 Expandable I/O — Up to 3 Slots for Y Series Boards

Choose 1, 2, or 3 Y Series I/O boards. Digital input/output, analog input/output, RTD (PT100/PT1000), thermocouple, pulse counting, pulse output, and serial port modules — all available. Your Rockwell PLC sees them as contiguous I/O data in its EtherNet/IP scanner.

🔁 Built‑in RS485 — Modbus RTU to EtherNet/IP Gateway

Have existing Modbus RTU devices on RS485 — sensors, meters, drives? Connect them to the BL194's isolated RS485 port. The BL194 reads Modbus RTU data and makes it available as EtherNet/IP I/O data. Your Rockwell PLC reads Modbus devices as if they were native I/O points. No separate gateway. No additional programming.

⚡ Dual Ethernet with Integrated Switch — Line Topology Ready

Two RJ45 ports with built‑in switch support EtherNet/IP line topology. Daisy‑chain multiple BL194 modules or other EtherNet/IP devices without an external switch. Less hardware. Less cabling. Faster installation.

🌡️ Built for Harsh Environments — -40°C to +85°C Operation

Wide‑temperature operation, electrical isolation, EMC/EMI protection, independent hardware watchdog. The BL194 survives on automotive welding lines, food processing floors, and outdoor installations.

Who Should Use BL194?

🏭 Rockwell Automation Users

Your control system is built around ControlLogix, CompactLogix, or Micro800. You need distributed I/O without changing your programming environment. The BL194 appears as a standard EtherNet/IP adapter in Studio 5000 or RSLogix. Your existing code works. Just add the module to your I/O tree.

🔧 System Integrators Working with Rockwell

Your customer's plant runs Rockwell Automation. You need a flexible, cost‑effective distributed I/O solution that integrates without headaches. The BL194 drops in seamlessly. No protocol conversion. No special drivers. Just standard EtherNet/IP communication.

🚗 Automotive Manufacturing and Welding Lines

Deploy BL194 at each workstation — connecting weld guns, fixtures, sensors, buttons, and indicator lights. Directly connects to ControlLogix PLC systems without gateways. Full‑port electrical isolation resists strong electromagnetic interference from welding equipment.

📦 Smart Logistics and Sorting Systems

Deployed at sorting line nodes to connect photoelectric sensors, barcode scanners, and sorting cylinders. High‑speed EtherNet/IP communication ensures accurate and timely sorting operations. Supports data interaction with WMS systems.

🔋 Semiconductor Manufacturing Equipment

Used as I/O expansion for Micro800 PLC systems, connecting precision sensors, actuators, and motion controllers. High‑precision analog I/O meets the demanding control requirements of semiconductor production.

Technical Specifications 

📋 For complete technical specifications and Y Series I/O board selection, please see the EdgeIO Controller Selection Guide

Ordering Information