The I-7188EXD-MTCP is a family of Programmable Device Servers, also known as "Serial-to-Ethernet gateway", that are designed for linking RS-232/485 devices to an Ethernet network. The I-7188EXD-MTCP also works as a Modbus TCP to RTU gateway that supports most SCADA/HMI communications based on the Modbus TCP protocol.

ICP DAS provides easy-to-use software development tool kits (XServer, Modbus libraries). Users can use them to easily integrate serial devices to have Ethernet/Internet communication ability and through the standard Modbus protocol to communicate with SCADA software (Indusoft, ISaGARF, DasyLab, Trace Mode, Citect, iFix, etc.).

For hardware expansion, the I-7188EXD-MTCP also supports an I/O expansion bus. A cost-effective I/O expansion board with A/D, D/A, D/I, D/O and serial ports is available. Nearly all kinds of I/O functions can be implemented by this bus. But the bus can support only one board. There are more than 50 boards available for I-7188EXD-MTCP, you can choose one of them to expand hardware features.