B&R 3IF681.86 (2005 Series Interface Module) Detailed Product Description Product Overview

The B&R 3IF681.86 is a compact, multifunctional communication interface module designed specifically for the B&R SYSTEM 2005 platform. It integrates one RS232 serial interface and one 10BASE-T Ethernet interface, featuring a standardized slot-based design optimized for industrial automation applications. With high reliability, strong anti-interference capability, and plug-and-play functionality, this module enables efficient data exchange between controllers, field devices, and higher-level systems. It supports network communication and flexible system expansion, meeting the demands of long-term stable operation in harsh industrial environments.

Basic Information  

Product Model: 3IF681.86  

Brand: B&R (Bernecker+Rainer)  

Series: SYSTEM 2005 Interface Module Series  

Product Type: Multi-protocol Communication Interface Module  

Installation Method: Fits into 2005 series CPU/IF slots (e.g., CP260, IF260, IF060), direct plug-in installation  

Dimensions: Approx. 150 mm × 20 mm × 90 mm  

Weight: Approx. 0.1 kg  

Protection Rating: IP20 (suitable for cabinet mounting)  

Operating Voltage: 5 VDC (supplied via backplane)  

Certifications: CE, UL, CSA industrial compliance certifications  

Origin: Austria  

Function and Positioning  

This module serves as a core communication expansion unit for the 2005 series PLC system, positioned as a multi-link data hub in industrial environments, combining both traditional serial communication and Ethernet networking capabilities. The RS232 interface enables point-to-point connections with human-machine interfaces (HMIs), barcode scanners, serial printers, and legacy serial devices, ideal for short-range, high-stability serial data transmission. The 10BASE-T Ethernet interface uses an RJ45 connector to support industrial Ethernet communication, enabling connectivity with host computers, SCADA systems, other PLCs, and Ethernet-enabled field devices—meeting requirements for remote monitoring, program downloading, and data sharing. Supporting hot-swapping, the module allows installation, replacement, and maintenance without system downtime, significantly reducing operational and maintenance costs. It is well-suited for communication expansion and system upgrades in medium- to small-scale automation systems.

Key Performance Specifications  

Communication Interfaces: 1×RS232 (9-pin D-Sub), 1×10BASE-T Ethernet (RJ45 female connector)  

Supported Protocols: RS232 (ASCII, binary protocols); Ethernet (TCP/IP, UDP)  

Data Transfer Rates: RS232 up to 19.2 kbps; Ethernet 10 Mbps (auto-adaptive half-duplex/full-duplex)  

Electrical Isolation: Electrical isolation between RS232 and Ethernet interfaces, offering strong anti-interference performance  

Power Consumption: ≤2.5 W  

Operating Temperature: -20°C to +60°C  

Storage Temperature: -40°C to +85°C  

Relative Humidity: 5%–95% (non-condensing)  

Status Indicators: TX/RX LEDs for RS232, link/activity LEDs for Ethernet  

Network Features: Supports static IP address configuration, compatible with 2005 series PLC network topologies, and allows node number-to-IP address association

Commonly Used Accessories  

Communication Cables: Shielded straight-through RS232 cable, shielded industrial Ethernet twisted pair cable (for 10BASE-T)  

Connection Components: 9-pin D-Sub connector (RS232), industrial waterproof RJ45 coupler (Ethernet)  

Mounting Accessories: Standard 2005 series backplanes (6/9/12/15-slot), DIN rail mounting kit (compatible with host station) Software Tools: B&R Automation Studio (configuration / programming), Ethernet communication configuration library, RS232 drivers, network debugging and diagnostic tools

Applicable Equipment Areas  

Industrial Automation: 2005 series PLC control systems, automated assembly lines, process control stations, discrete manufacturing production lines  

Factory Communication Networks: Industrial Ethernet networking, data exchange between PLCs and HMIs/upper-level computers, remote monitoring and maintenance systems  

Machinery and Equipment: Packaging machinery, textile machinery, plastic injection molding equipment, woodworking machinery, 3C processing equipment  

Intelligent Buildings: HVAC systems, building automation equipment, energy monitoring and management systems  

Process Industries: Water treatment equipment, food and beverage production lines, pharmaceutical equipment, small-to-medium chemical control systems  

Other Applications: Equipment retrofitting and upgrading (serial-to-Ethernet conversion), multi-device networking in industrial environments, communication expansion for embedded control units