... interface allows you to leverage the same practices for both HART and FOUNDATION fieldbus devices. It includes a larger touch screen ... Communicator. Keeping your 475 Field Communicator updated is easy.New HART and FOUNDATION fieldbus devices, as well as functional updates to ... keys including 4 action keys, 12 alphanumeric keys, tab key, function key, backlight key, power key,and 4 cursor-control (arrow ...