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.