The PMC-1304-3 is an ideal instrument to connect serial devices to an IP based Ethernet LAN for any industrial automation systems that require isolation protection as well as high reliability. The basic Model provides Modbus Gateway function from Modbus TCP to RTU and supports interrogation for multiple Modbus Masters. The optional RTU Model features 2GB On-Board Memory for local data caching and logging to enhance overall system performance and provides data redundancy.