Control system for controlling safety-critical processes
    1.
    发明申请
    Control system for controlling safety-critical processes 有权
    用于控制安全关键过程的控制系统

    公开(公告)号:US20020126620A1

    公开(公告)日:2002-09-12

    申请号:US10029894

    申请日:2001-12-21

    Abstract: The present invention describes a control system for controlling safety-critical processes. The control system has a first control unit for controlling a safety-critical process and at least one signal unit linked to the safety-critical process via I/O channels. It further comprises a field bus connecting said first control unit and said signal unit, and a bus master for controlling communication on said field bus. Said first control unit and said signal unit each comprise safety-directed arrangements for ensuring failsafe communication among each other. Said bus master is connected to said field bus separately from said first control unit and said signal unit.

    Abstract translation: 本发明描述了一种用于控制安全关键过程的控制系统。 该控制系统具有用于控制安全关键过程的第一控制单元和经由I / O通道链接到安全关键过程的至少一个信号单元。 其还包括连接所述第一控制单元和所述信号单元的现场总线以及用于控制所述现场总线上的通信的总线主机。 所述第一控制单元和所述信号单元各自包括用于确保彼此之间的故障安全通信的安全导向的布置。 所述总线主机与所述第一控制单元和所述信号单元分开地连接到所述现场总线。

    Method for adjusting the data transmission rate in a fieldbus system
    2.
    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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