Method and apparatus for allocating and prioritizing data transmission
    1.
    发明公开
    Method and apparatus for allocating and prioritizing data transmission 有权
    一种用于分配和数据传输的优先级的方法和装置

    公开(公告)号:EP2453613A1

    公开(公告)日:2012-05-16

    申请号:EP11189174.3

    申请日:2011-11-15

    IPC分类号: H04L12/56 H04L12/40

    摘要: The subject matter disclosed herein describes a method to allocate and prioritize data communications on an industrial control network. A transmission schedule (28) including multiple priority windows and multiple queues (Q) is established. Each queue (Q) is assigned to at least one priority window, and each priority window may have multiple queues (Q) assigned thereto. A control device (10) communicating on the control network (12) transmits data packets according to the transmission schedule (28). Within each priority window, data packets corresponding to one of the queues (Q) assigned to the priority window may be transmitted. The data packets may be transmitted at any point during the priority window, but will only be transmitted if no data packet from a higher queue (Q) is waiting to be transmitted.

    摘要翻译: 游离缺失中的主题圆盘描述分配和到工业控制网络的数据通信的优先级的方法。 传输调度(28)包括多个优先级的窗口和多个队列(Q)的关系成立。 每个队列(Q)被分配给至少一个优先级的窗口,并且每个窗口的优先级可以具有分配给其的多个队列(Q)。 控制网络(12)上进行通信的控制装置(10)发送。根据所述传输调度(28)的数据分组。 在每个优先窗口,对应于分配给所述优先级窗口队列(Q)中的一个数据分组可以是反式mitted。 该数据分组可以是在优先权窗口期间的任何点反mitted,但将只能反mitted如果从较高队列(Q)没有数据包正等待被反mitted。

    Fault-tolerant ethernet network
    5.
    发明公开
    Fault-tolerant ethernet network 有权
    容错以太网网络

    公开(公告)号:EP2290878A1

    公开(公告)日:2011-03-02

    申请号:EP10013012.9

    申请日:2007-08-16

    IPC分类号: H04L12/24

    摘要: Fault-tolerant Ethernet is provided through the use of special interfaces (14a,b) providing duplicate ports that may be alternatively enabled with the same network address. A switching between the ports, corrects for single faults in a two-way redundant system (16a,b) without time-consuming reconfiguration of other end devices (12a-e) or the need for complex middleware in the end devices (12a-e).

    摘要翻译: 通过使用提供重复端口的特殊接口(14a,b)提供容错以太网,交替使用相同的网络地址。 端口之间的切换纠正了双向冗余系统(16a,b)中的单个故障,而没有其他终端设备(12a-e)的耗时重新配置或终端设备(12a-e)中的复杂中间件 )。

    Redundant gateway system for device level ring networks
    7.
    发明公开
    Redundant gateway system for device level ring networks 有权
    Redundantes Gateway-SystemfürRingnetzwerke auf Vorrichtungsebene

    公开(公告)号:EP2595345A1

    公开(公告)日:2013-05-22

    申请号:EP12192794.1

    申请日:2012-11-15

    摘要: Multiple gateway devices communicating between a device level ring (DLR) network and a spanning tree (ST) network may be provided a gateway protocol that cooperatively ensures that only a single gateway is active at a given time. This cooperation may be effected by the transmission of advertise messages by gateways, the advertise messages holding precedence values so that only a single gateway having a highest precedence value is active at a given time. Loss of the advertise messages may trigger a gateway held in a backup state to assume an active gateway role.

    摘要翻译: 可以提供在设备级环(DLR)网络和生成树(ST)网络之间通信的多个网关设备,其协作地确保在给定时间仅一个网关是活动的。 这种合作可以通过网关发布广告消息来实现,广告消息保持优先级值,使得在给定时间只有具有最高优先级值的单个网关是活动的。 广告消息的丢失可能触发保持在备份状态的网关承担活动网关角色。

    Multiple-fault-tolerant ethernet network for industrial control
    8.
    发明公开
    Multiple-fault-tolerant ethernet network for industrial control 有权
    Mehrfachausfall-tolerante Ethernetnetzwerkefürdie industrielle Steuerung

    公开(公告)号:EP2579508A1

    公开(公告)日:2013-04-10

    申请号:EP12187403.6

    申请日:2012-10-05

    IPC分类号: H04L12/24

    摘要: Fault-tolerant Ethernet is provided through the use of special interfaces providing end-devices with duplicate ports that may be alternatively enabled with the same network address in the event of a fault detected by loss of the message from a beacon device. Unidirectional network errors in the direction from the end-device to the beacon devices are detected through a path check message from the end-device to the beacon device. Multiple faults may be accommodated without network interruption by adding top-level switches without increasing the number of ports on the end-devices by cross connecting a lowest level of switch.

    摘要翻译: 通过使用特殊接口提供容错以太网,这些特殊接口为终端设备提供了重复端口,在通过信标设备的消息丢失检测到故障的情况下,该端口可以替代地启用相同的网络地址。 通过从终端设备到信标设备的路径检查消息来检测从终端设备到信标设备的方向上的单向网络错误。 可以通过添加顶级交换机而不增加终端设备上的端口数量,通过交叉连接最低级别的交换机来容纳多个故障而无需网络中断。