HITACHI LBT010A Profibus-DP Communication Module

The HITACHI LBT010A is a dedicated Profibus-DP slave communication module designed to integrate Hitachi programmable logic controllers (PLCs) into Profibus-DP fieldbus networks. It acts as a gateway, allowing the PLC to exchange data with a Profibus-DP master (such as a Siemens S7 or third-party controller) at speeds up to 12 Mbps. The module handles all Profibus protocol processing, offloading communication tasks from the PLC CPU and ensuring deterministic data exchange. With support for up to 244 bytes of input and output data per direction, it is suitable for both small and medium-sized distributed automation systems.

Key Features

• Profibus-DP Slave Compliance: Fully compliant with IEC 61158/61784 standards, supporting baud rates from 9.6 kbps to 12 Mbps (automatic detection).

• High Data Throughput: Up to 244 bytes input and 244 bytes output data per slave, configurable via GSD file.

• Galvanic Isolation: 500 VAC isolation between Profibus interface and PLC backplane, ensuring noise immunity.

• Integrated Diagnostics: LED indicators for network status, data exchange, and module errors; detailed diagnostics accessible via Profibus.

• Easy Configuration: All parameters set via GSD file; no additional programming required on the Profibus master side.

• Compact Design: Single-slot module fits any Hitachi PLC rack, saving panel space.

Technical Specifications

• Communication Interface: Profibus-DP slave (RS-485), 9-pin D-sub female

• Supported Baud Rates: 9.6 kbps, 19.2 kbps, 45.45 kbps, 93.75 kbps, 187.5 kbps, 500 kbps, 1.5 Mbps, 3 Mbps, 6 Mbps, 12 Mbps (auto-detecting)

• Data Exchange: Cyclic I/O up to 244 bytes input / 244 bytes output

• Isolation: 500 VAC between Profibus and PLC logic

• Power Supply: 5 VDC from backplane (typically 200 mA)

• Operating Temperature: 0°C to +55°C

• Dimensions: Standard single-slot module (approx. 30 mm width)

• Certifications: CE, UL, cUL

Applications

The LBT010A is essential in multi-vendor automation environments where Hitachi PLCs must communicate with a central Profibus-DP master. Typical applications include automotive assembly lines, material handling systems, and process plants where Profibus is the established fieldbus. It enables Hitachi controllers to participate in distributed I/O networks, exchange data with drives and remote I/O stations, and integrate with SCADA systems via the Profibus master.

Configuration and Integration

Setting up the LBT010A is straightforward: after inserting the module into a Hitachi PLC rack, users generate a GSD file (provided by Hitachi) and import it into the Profibus master's engineering tool (e.g., Siemens STEP 7). The desired I/O data length and addresses are configured, and the network parameters are set. On the Hitachi PLC side, special function blocks or direct I/O mapping are used to access the data. The module automatically handles bus timing and diagnostics, making it transparent to the PLC programmer.

Reliability and Environmental Compliance

Built for industrial use, the LBT010A features robust EMC protection and meets IEC 61131-2 requirements. It operates reliably in temperatures up to 55°C and is resistant to vibration and shock. The module is CE marked and UL listed, ensuring compliance with international safety and performance standards.

The HITACHI LBT010A Profibus-DP communication module bridges the gap between Hitachi PLCs and Profibus networks, enabling seamless data exchange and enhancing system flexibility in hybrid automation architectures.