The first Ethernet port is a real bargain - it's built into
the Do-more CPU (H2-DM1E) for just $103 more than the non-Ethernet version (H2-DM1). But many applications require a second Ethernet port. Add an H2-ECOM100 and connect your Do-more to segregated networks for security or isolation.
The H2-ECOM100 module supports master/slave communication, 10/100 Mbps auto-detect, TCP/IP, UDP/IP, IPX, and Modbus TCP application layer protocols.