The G310 10-inch and G315 15-inch Operator Interface Terminals combine unique capabilities normally expected from high-end units with a very affordable price. The G310/G315 is able to communicate with many different types of hardware using high-speed RS232/422/485 communications ports and Ethernet 10 Base T/100 Base-TX communications. In addition, the G3 HMI features USB for fast downloads of configuration files and access to trending and data logging. A CompactFlash socket is provided so that Flash cards can be used to collect your trending and data logging information as well as to store larger configuration files. In addition to accessing and controlling of external resources, the G3 HMI allows a user to easily view and enter information. Users can enter data through the touchscreen or front panel keypad. All G3 series HMIs include a web server, trending, data logging, and a built-in "C" language-like editor and compiler for writing your own control functions.