MITSUBISHI QJ71C24N-R4 Product information and technical parameters：Brand: MITSUBISHIName: Serial communication module (upgrade)Model: QJ71C24N-R4RS-422/485.2 channel.Transmission speed: 2 channels.Total 230.4kbps.Corresponding Configurator-SC Version2 GX.Serial communication module capable of collecting and changing data of the programmable controller, monitoring and managing, measuring data collection, and so on.Can achieve the highest speed of 230.4kbps, a maximum of 960 words (MC protocol communications) of the high speed and large capacity communications.Can use MC protocol, through the external devices (PC, monitors, etc.) to implement the data read/write programmable controller.