Here are some key features and specifications of the QJ71DN91 module:

Network Compatibility: The QJ71DN91 supports the CC-Link IE Field Network, which is a high-speed open field network developed by Mitsubishi Electric. It allows for seamless integration and communication between PLCs, HMIs, and other devices on the network.

Data Transfer Rate: The module supports a high data transfer rate of up to 1 Gbps, enabling fast and efficient communication between devices on the network.

Network Topology: The QJ71DN91 module supports a variety of network topologies, including line, star, and mixed topologies. This provides flexibility in designing the network architecture based on the application requirements.

Programming: The QJ71DN91 module can be programmed using the programming software provided by Mitsubishi Electric, such as GX Works2 or GX Works3. This allows users to configure the module and integrate it into their PLC application.

Module Configuration: The QJ71DN91 module is typically installed in a vacant slot of the MELSEC-Q series PLC rack. It requires a power supply connected to the PLC rack and appropriate network cabling for communication.