POWER ON – Applies control power to the machine and begins the self-diagnostics.POWER OFF – Shuts off control power and stops machine operation. Pressing this pushbutton during operation will leave product in process and the machine will need to be reinitialized to restart operation. SYSTEM RESET – This pushbutton resets a relay that prevents the equipment from automatically restarting after a safety circuit alarm has been triggered. Once the SYSTEM RESET pushbutton on the main control panel is lit it will need to be pressed prior to selecting POWER ON.EMERGENCY STOP – Pressing any E-Stop unconditionally and immediately halts the machine in an Emergency Power Off (EPO/E-Stop) condition by immediately removing control power.