Industrial MDM232RS232R9MDM Modem Board For PLC

The Rugid MDM232RS232R9MDM is a Modem/RS232 board designed to plug into Rugid’s RUG9 line of RTUs and PLC control systems, delivering a dedicated serial modem interface for industrial automation. It supports dial-based serial communication at 300 or 1200 baud and can be configured for either 2-wire or 4-wire operation, using Bell 103/212 modem standards to establish a connection over traditional telephone networks. The board exposes an RS232 serial interface to the host PLC or DTE device, enabling remote access and data exchange within an automation or SCADA network. Rugid’s official R9MDM model listings describe it as a Modem / RS232 board with 300/1200 baud capability and 2-wire or 4-wire configurations, confirming its role as a compact PLC modem option within the Rug9 ecosystem. This module is intended for deployments where a small, plug-in modem is preferred in control cabinets and field installations, providing a straightforward serial path between PLCs and remote masters or data loggers requiring RS232 modem connectivity in industrial environments.