Method for adjusting the data transmission rate in a fieldbus system
    1.
    发明申请
    Method for adjusting the data transmission rate in a fieldbus system 有权
    调整现场总线系统数据传输速率的方法

    公开(公告)号:US20020091838A1

    公开(公告)日:2002-07-11

    申请号:US10071035

    申请日:2002-02-08

    Abstract: The invention relates to a method for adjusting the data transmission rate in a fieldbus system (10) which is suitable to control safety-critical processes and which comprises at least one subscriber (12, 14) connected to a fieldbus (20), wherein in a first phase the subscriber/subscribers log on at a unit (30/central unit) centrally connected to the fieldbus with a first low data transmission rate. In a second phase the central unit (30) sets the data transmission rate at the subscriber/subscribers (12, 14) to a predetermined higher second value. In a third phase the subscriber/subscribers (12, 14) log on again at the central unit with a higher data transmission rate; and the central unit (30) shuts down the fieldbus (20) if it detects a deviation of the number of subscribers (12, 14) logged on in the first and the third phase. The invention also relates to a fieldbus system for implementing said method

    Abstract translation: 本发明涉及一种用于调整现场总线系统(10)中的数据传输速率的方法,其适用于控制安全关键过程,并且包括至少一个连接到现场总线(20)的用户(12,14),其中, 用户/用户以与第一低数据传输速率集中连接到现场总线的单元(30 /中央单元)登录的第一阶段。 在第二阶段,中央单元(30)将用户/订户(12,14)处的数据传输速率设置为预定的较高的第二值。 在第三阶段,用户/用户(12,14)在中央单元上再次登录具有较高的数据传输速率; 并且如果中央单元(30)检测到在第一和第三阶段中登录的用户数量(12,14)的偏差,则中央单元(30)关闭现场总线(20)。 本发明还涉及一种用于实现所述方法的现场总线系统

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