QJ71DN91 is an Ethernet communication module by Mitsubishi Electric.
QJ71DN91 is an Ethernet communication module by Mitsubishi Electric. It is part of the Q Series PLC system and provides a means of connecting the PLC to an Ethernet network for communication with other devices or systems. The QJ71DN91 module supports various Ethernet protocols, such as TCP/IP, UDP, and Modbus TCP, allowing for flexible integration and communication with other devices.