The NovoNet GSP (Global Serial Protocol) specifies the communication, via serial link, of the UDI (Universal Data Interface) with the GD (Gaming-Device).
The master in the communication is the GD. The GD sends periodically an online check command to the UDI.
If status or data has changed on the GD, the GD sends the appropriate message, in order of occurrence, to the UDI.
Protocol specification (Confidential and Proprietary):
Novomatic NovoNet Global Serial Protocol (GSP)