KaVo ORTHOPANTOMOGRAPH OP 3D Pro, Service Manual, Page: 92 / 192

4 Firmware description
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4.4 Firmware states
IO cards only have one state. The IO cards wait for
commands from the main CPU. After they receive a
command they execute the command and send an
acknowledgment of its execution to the main CPU.
CPU board (R3220) has several states that perform
various checks during operation of the system.
R3220 states
R3220 control state machine has the following states:
- Init (Initialization)
- Idle
- Select (Program select)
- Ready
- Exposure
- Transfer (Image transfer)
- Error
- Error Service
- Off (emergency stop!)