The backlight is functional, but the touchpanel is jackedup, if you put it into calibration mode, it will only recognize touches in a 1x1 inch portion of the upper left of screen, i took it apart and reseated connectors but still did it, I have an Omron HMI that will that will communicate with his FX3U PLC, but want app out of this one to use for development, thanks for diagram, its a straight thru cable, will dig up a computer with serial port, thanks again