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Mitsubishi PLC Q Series Network Module QJ71LP21-25

The Mitsubishi PLC Q Series MELSECNET/H Network Module QJ71LP21-25 is a high-performance communication interface designed to seamlessly integrate Mitsubishi PLCs with remote I/O devices over a MELSECNET/H network. The QJ71LP21-25 supports up to 65 stations, consisting of one remote master and up to 64 remote I/O stations. With selectable communication speeds of 25 Mbps and 10 Mbps, the QJ71LP21-25 ensures high-speed data transfer, making it ideal for applications requiring real-time communication and large data handling.

The QJ71LP21-25 allows for bidirectional communication with up to 16384 input/output points, supporting complex factory automation and industrial processes. This module features robust diagnostic capabilities, such as the loopback function, to detect errors in the network and help prevent downtime. Its compact design and easy integration with Mitsubishi PLC systems enable the QJ71LP21-25 to be quickly deployed in a wide range of automation environments.

The QJ71LP21-25 also provides features such as frame synchronization and dual-duplex loop communication, ensuring reliable and consistent data transfer across the network. With its high capacity, diagnostic tools, and easy setup, the QJ71LP21-25 is an excellent choice for scaling up and optimizing industrial networks.

Product Description

Mitsubishi PLC Q Series Network Module QJ71LP21-25

The Mitsubishi PLC Q Series Network Module QJ71LP21-25 offers enhanced communication features that make it a valuable component in automation and control systems, ensuring reliable data exchange between various PLCs and remote devices. This module is designed to work with MELSECNET/H, providing a high-speed network backbone for large-scale industrial systems.

Additional Details:

Linking and Data Handling:
- The QJ71LP21-25 is optimized for large data transfers, making it ideal for systems that require high bandwidth. The module supports an impressive range of data points across multiple connected devices.
- With 8192 points for LX/LY and 16384 points for LB/LW, the module can handle complex and data-intensive applications, such as factory automation systems and large-scale monitoring/control networks.
Data Transfer and Communication Features:
- The module supports bidirectional data transfer between the remote master and I/O stations using the efficient token passing method, ensuring uninterrupted communication and maintaining network integrity even in complex setups.
- The frame synchronization ensures that all connected devices operate in sync, preventing data loss or errors that may arise from timing discrepancies.
Network Expansion and Scalability:
- Maximum 65 stations (1 remote master and 64 remote I/O stations) enable a wide range of configurations, making it possible to scale the network as system requirements grow. This flexibility allows users to expand their systems without needing to overhaul existing infrastructure.
Network Topology and Flexibility:
- The dual-speed communication modes (25 Mbps and 10 Mbps) enable users to balance speed and network distance. The 25 Mbps mode is perfect for shorter connections, while the 10 Mbps mode supports longer distances, offering the flexibility to design networks that meet specific needs.
Advanced Diagnostics and Reliability:
- RAS functionality helps identify errors early in the system and allows users to quickly diagnose network issues, ensuring minimal downtime. The built-in loopback functionality and local link line diagnostics are especially helpful in detecting faults in the communication path.
- Additionally, the module provides a self-diagnostic feature, ensuring the network remains operational and performing optimally at all times.
Wide Range of Applications:
- The QJ71LP21-25 is designed for industrial environments that demand continuous and high-speed communication, such as assembly lines, process control systems, and robotics. It is particularly beneficial in sectors like automotive manufacturing, packaging, and materials handling, where real-time data processing is crucial.
Ease of Integration:
- Its compatibility with various Mitsubishi PLC systems, including MELSEC-Q, makes the QJ71LP21-25 a versatile choice for users looking to integrate multiple PLCs into their network. It simplifies communication and enhances data flow within automated systems, leading to improved productivity and efficiency.
Compact and Efficient Design:
- The QJ71LP21-25 offers a lightweight design (only 0.11 kg), making it easy to integrate into both small and large-scale systems. The compact dimensions contribute to its suitability for space-constrained applications, enabling users to optimize panel and equipment space while maintaining robust network communication.

Overall, the QJ71LP21-25 network module is a key component for ensuring high-performance and reliable network communication in automated systems. Its advanced features, scalability, and ease of integration make it a great fit for various industrial applications requiring efficient and fault-tolerant data transfer.