For deployment in applications in which devices with a serial RS-232/-242/-485 interface communicates in an Ethernet network, Weidmüller's serial/Ethernet converter makes it simple to integrate practically all serial terminal devices in existing Ethernet structures. The user is able to configure function parameters via a web console, serial console, Telnet console or a Windows utility, which applies to both serial ports as well as the Ethernet network. The converter’s serial interface supports such operation modes as TCP server, TCP client, UDP, Real COM, RFC2217, Reverse Telnet, Pair Connection and Ethernet modem. Devices with fieldbus-independent configuration can be remotely configured and operated via their Ethernet connection. Users are also able to implement a cascade connection comprising several serial/Ethernet converters to create an Ethernet network structure that enables uncomplicated access to components with a serial interface, for example via PCs. It is possible to use the two Ethernet ports integrated in the device as Ethernet switch ports. This enables users to reduce cabling costs, simply because it is not necessary to connect each device to a separate Ethernet switch. The relay output serves as a warning function for administrators. A corresponding warning is sent via e-mail if there are any problems with the Ethernet connections or non-authorized changes are made to the serial signals and power connections. Extended surge voltage protection for the serial connections, the Ethernet ports and power supply allow deployment in harsh industrial environments. Robust screw-type terminal blocks ensure the power supply and serial connectors are reliably connected. Redundant 12-48 VDC power supply inputs and low power consumption ensure safety and reliability.