The WorldFIP protocol is based on a centralized communication media access control mechanism,where a Bus Arbitrator controls all data transferred between field devices,according to a Scanning Table pre-defined.

• 方法WorldFIP总线采用集中式MAC机制；即由总线活动仲裁器按照一个预定的扫描变量表；控制周期性信息和非周期性信息在总线上的传递.