公开(公告)号：US4581701A

公开(公告)日：1986-04-08

申请号：US486256

申请日：1983-04-18

申请人： Wilfried Hess ,  Erwin Buxmeyer ,  Wolfgang Ziegler ,  Gerd R. Tremmel ,  Arthur Barthol

发明人： Wilfried Hess ,  Erwin Buxmeyer ,  Wolfgang Ziegler ,  Gerd R. Tremmel ,  Arthur Barthol

IPC分类号： G05B9/03 ,  G05B9/02 ,  G06F11/00 ,  H04J1/16 ,  H04J11/00

CPC分类号： G05B9/03

摘要： A monitoring system for several process control stations includes a redundancy station having a central processing unit and an operating memory to take over the functions of a dropped out process control station. The takeover involves internal bus separation to separate auxiliary and long term storage facilities from immediate processing facilities in each of the process control stations so that upon separation of the latter from the former the redundancy station can effectively take over together with the peripheral equipment and auxiliary devices. The redundancy station cyclically monitors the operating state of the several process control stations and particularly tests status information contained in the particular buffer portion of each of the processing stations. Moreover, relevant data is copied into a standby buffer during each cyclic monitoring step to be used if, pursuant to the next reoccurring supervising and monitoring step, the particular process control station is found to be defective.

摘要翻译： 用于多个过程控制站的监视系统包括具有中央处理单元和操作存储器的冗余站，以接管丢弃过程控制站的功能。 接管涉及内部总线分离，以将辅助和长期存储设施与每个过程控制站中的即时处理设备分开，以便在后者与前者分离时，冗余站可以与外围设备和辅助设备 。 冗余站周期性地监视几个过程控制站的操作状态，特别是测试包含在每个处理站的特​​定缓冲器部分中的状态信息。 而且，如果根据下一次重新执行的监视步骤，发现特定的过程控制站是有缺陷的，则在每个循环监视步骤期间将相关数据复制到备用缓冲器中。