Serial Communication products ICP-DAS products Industrial Communication Serial Communication Serial-to-Ethernet Device Server By programming, PDS acts as a real-time translator (protocol converter) to enhance the communication between the serial devices. Modbus Data Concentrator The MDC performs the pre-defined Modbus/RTU commands to read/write data from/to the Modbus/RTU slave devices via the RS-232/485. It mirrors the data of the slave devices to its own shared memory. Multi-port Serial Board The VXC multi-port serial card enables user to increase additional communication ports on the PC. Gateway – more Converter – Repeater – Hub – Remote Maintenance Product The Remote Maintenance series is designed to provide real-time online maintenance of remote equipment.