Description

Product Specifications

Parameter Name	Parameter Value
Product model	R28TB
Manufacturer	Mitsubishi Electric
Product category	PLC Communication Module / Network Interface Module
Electrical performance	24 VDC power supply, typical operating current: 0.3 A
Physical size	Compact DIN rail mount (approx. 55 x 98 x 75 mm)
Interface type	Ethernet (RJ45), CC-Link IE Field Basic
Communication protocol	CC-Link IE Field Basic, supports TCP/IP, UDP/IP, MELSEC communication protocols
Environmental requirements	Operating temperature: 0°C to 55°C; Humidity: up to 95% RH non-condensing
Installation method	DIN rail mounting
Performance indicators	Communication speed: 10/100 Mbps auto-negotiation
Additional features	Built-in web server, support for SNMP monitoring, IP filtering and VLAN tagging

Product Introduction

The Mitsubishi R28TB is a high-performance communication module designed for use with Mitsubishi Electric’s Q Series and L Series programmable logic controllers (PLCs). It serves as an essential component in industrial automation systems by enabling fast and reliable Ethernet-based communication through the CC-Link IE Field Basic protocol.

This module provides seamless integration into factory networks, allowing for real-time data exchange between PLCs, HMIs, SCADA systems, and other field devices such as sensors, drives, and remote I/O stations. The R28TB supports both standard Ethernet protocols (TCP/IP, UDP/IP) and Mitsubishi’s proprietary MELSEC communications, making it versatile for applications ranging from discrete manufacturing to complex process control environments.

With built-in diagnostic tools and network management features, the R28TB enhances system uptime and simplifies troubleshooting. Its compact design allows easy installation on standard DIN rails within control cabinets, and its robust construction ensures reliable operation under typical industrial conditions.

Whether used in new automation deployments or retrofitted into existing systems, the Mitsubishi R28TB offers a scalable and efficient solution for connecting automation equipment across a wide range of industries including automotive, packaging, food & beverage, and semiconductor manufacturing.

MITSUBISHI R28TB

Main Features and Advantages

High-speed Ethernet connectivity

The R28TB supports 10/100 Mbps Ethernet communication with auto-negotiation capabilities, ensuring fast and stable data transfer between the PLC and connected devices. This high bandwidth is ideal for handling large volumes of real-time process data, alarms, and diagnostics.

Support for CC-Link IE Field Basic

As a certified CC-Link IE Field Basic module, the R28TB enables seamless integration with compatible slave devices from Mitsubishi and third-party vendors. This open-standard industrial Ethernet protocol ensures interoperability and reduces engineering complexity in multi-vendor environments.

Built-in web server and SNMP support

The R28TB includes a built-in web server that allows users to access configuration settings and monitor network status via a standard web browser. It also supports SNMP (Simple Network Management Protocol) for centralized monitoring and management within enterprise-level IT systems.

Flexible communication options

In addition to CC-Link IE Field Basic, the R28TB supports various communication modes such as MC Protocol (Ethernet), UDP socket communication, and IP forwarding, providing flexibility for different application scenarios including machine-to-machine (M2M) communication and remote HMI connections.

Easy setup and diagnostics

The module can be configured using GX Works2 or GX Works3 software, streamlining the commissioning process. Real-time LED indicators provide visual feedback on communication status, link activity, and error conditions, facilitating quick troubleshooting and maintenance.

Application Areas

Factory automation

The R28TB is widely used in discrete manufacturing lines where fast and reliable Ethernet communication is required between PLCs, robots, vision systems, and conveyors. Its ability to handle multiple slaves makes it ideal for complex machine coordination tasks.

Process control systems

In chemical, pharmaceutical, and water treatment plants, the R28TB facilitates real-time data acquisition from distributed I/O modules and process instruments, supporting accurate control and monitoring over long distances.

Remote monitoring and diagnostics

With its support for web-based access and SNMP, the R28TB is suitable for remote plant monitoring and predictive maintenance applications. Engineers can access device status and alarm information from off-site locations, improving response times and reducing downtime.

Machine building and system integration

Machine builders benefit from the R28TB’s modular design and compatibility with a wide range of automation components. It simplifies the development of standardized machine control panels that can be easily integrated into larger production lines.

MITSUBISHI R28TB

Related Products

Mitsubishi QJ71E71-100: High-performance Ethernet communication module offering additional functions beyond the R28TB, including FTP server and HTTP client capabilities
Mitsubishi R60EN: CC-Link IE Field Basic master module with dual-port Ethernet for ring topology configurations
Mitsubishi GT Simulator3: Simulation software used to test and configure HMI communication with R28TB-based PLC systems
Mitsubishi MX Component: Software library for accessing R28TB communication data from PC-based applications such as SCADA or MES
Mitsubishi QJ71LB92: CC-Link IE Field Basic wireless communication module often used in mobile or rotating equipment alongside R28TB master units
Mitsubishi GOT2000 Series: Human-machine interface (HMI) panels commonly connected via R28TB for operator visualization and control

Installation, Commissioning, and Maintenance Instructions

Before installing the Mitsubishi R28TB, ensure that the control cabinet is clean, dry, and free from excessive vibration or electromagnetic interference. Verify that the power supply matches the module’s voltage requirements (24 VDC), and disconnect all power before wiring connections to prevent damage to sensitive electronics.

During commissioning, use GX Works2 or GX Works3 software to assign an IP address, configure communication parameters, and set up slave device mapping. Test each communication channel individually to verify data integrity and response time. Ensure that all connected devices are properly grounded and that network terminations are secure.

For ongoing maintenance, periodically check the R28TB for overheating, loose connections, or abnormal LED behavior. Use the built-in web server or SNMP tools to monitor traffic load and detect potential network bottlenecks. Maintain firmware updates and configuration backups to ensure long-term reliability and ease of recovery in case of failure.