The status of the pushbuttons is transmitted at fixed frequency or/and when it changes.
The CAN messages as frequency, IDs, baud rate, endian and contents can be freely configured.
The status of every pushbutton at the power OFF can be hold at the next power ON.
K6/K8/K15 Open Keypads can manage a CAN INPUT protocol, in order to give a feedback, trough the color LEDs, based upon the information received.