NEW ORIGINAL 1UNIT SIEMENS HMI GRAPHIC PANEL 6AV6643-0BA01-1AX0
HMI or Human Machine Interface Panels are a very intuitive graphical interface between the Machine operator and the Programmable Logic Controller (PLC) of the machine. They allow the operator to monitor the machine status at a glance. Most of the HMIs can be remotely programmed & networked with other HMIs and computers. Today’s HMIs include a touch sensitive screen which removes the need to install control buttons (other than start and stop) and other switches on the machine’s control panel as the HMI can be used to operate the machine with numerous “virtual” keys.