The Hitachi IO server allows the Ewon Flexy to poll tags belonging to the HITACHI EH series using its serial link or Ethernet interface.

The Ewon Flexy uses:

  • standard H protocol for serial RS232,
  • station number H protocol for serial RS485,
  • Ethernet H-protocol for Ethernet.

The remote maintenance functionality for serial communication is provided by the VCOM feature of the Ewon device.