EAO Configurable HMI Panel - Manual (Page 8)

Configurable HMI Panel
Installation Guide and User Manual
Page 7 / 16
Keyboard Interface
Both variants (with and without touch screen) of each series use the same key codes. If USB
is selected as keyboard interface the keyboard sends standard HID codes according to the
corresponding table of each series. If serial communication is selected the same hex-values are
sent for the single keys. For serial communication a special protocol is defined
(see section “Serial Interface”).
USB Interface
The keyboard is a standard HID device and
is configured with two interfaces
(keyboard and LED).
Configuration descriptor:
Keyboard interface descriptor: