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    • 10. 发明申请
    • REDUNDANT SUPERVISORY CONTROL SYSTEM, AND REDUNDANCY SWITCHING METHOD OF THE SAME
    • 冗余监控系统及其冗余切换方法
    • US20070147232A1
    • 2007-06-28
    • US11566310
    • 2006-12-04
    • Jun TakeharaAkira SawadaMakoto TokoHiroyuki KusakabeShinya KonoYuuji Umeda
    • Jun TakeharaAkira SawadaMakoto TokoHiroyuki KusakabeShinya KonoYuuji Umeda
    • H04L12/26H04J3/14
    • G05B9/02
    • An object is to provide a redundant supervisory control system and a redundancy switching method thereof. In the redundant supervisory control system, remote I/O apparatuses are less likely to be inaccessible, even in a case where failures occur in plural locations. Thus, the reliability of the system is enhanced. The redundant supervisory control system including a plurality of first loop interface units in each of a pair of controllers, second loop interface units, and communication cables each connecting the plurality of first and second loop interface units with one another in a circular loop. The redundant supervisory control system is configured by connecting the controllers and the remote I/O units to one another in a plurality of loop networks. In a case where abnormality in the loop networks is detected by use of received data in the networks, the first and second loop interface units that can perform normal reception are automatically selected.
    • 目的在于提供一种冗余监控系统及其冗余切换方法。 在冗余监控系统中,即使在多个位置发生故障的情况下,远程I / O设备也不太可能无法访问。 因此,提高了系统的可靠性。 冗余监控系统包括在一对控制器,第二回路接口单元和通信电缆中的每一个中的多个第一回路接口单元,每个控制器,第二回路接口单元和通信电缆中的每一个以圆形回路相互连接多个第一和第二回路接口单元。 冗余监控系统通过在多个环路网络中将控制器和远程I / O单元彼此连接来配置。 在通过使用网络中的接收数据检测到环路网络中的异常的情况下,可以自动选择能够执行正常接收的第一和第二环路接口单元。