专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明公开

EP0546339A1 Distributed control system 失效
标题翻译： Verteiltes Steuersystem。
公开(公告)号：EP0546339A1
公开(公告)日：1993-06-16
申请号：EP92119369.4
申请日：1992-11-12
申请人： Yokogawa Electric Corporation
发明人： Shioe, Yasuhiko , Akiyama, Chuji , Shirai, Toshiaki , Sakamoto, Hideyuki , Yasui, Hitoshi , Ishikawa, Makio , Matsukawa, Hideo
IPC分类号： G05B19/042 , G06F11/00
CPC分类号： G06F11/0757 , G05B19/0428 , G06F11/1417
摘要： A distributed control system including a control station that takes charge of control operation, and a remote input/output device that is connected to the control station through a remote input/output bus. In a normal state, cyclic scan transmission is carried out by using the remote input/output bus so that input/output data handled by the control station and input/output data on the remote input/output device side are maintained equivalently. The control station is provided with a continuation transmission service means that first performs transmission for urgent output only and then performs normal cyclic scan transmission service after the completion of the transmission for urgent output, an initialization start transmission service means that first performs cyclic scan transmission for input only, and an interruption duration measuring means that measures a period of transmission interruption duration of the remote input/output bus. When the result of measurement made by the interruption duration measuring means is shorter than a predetermined time, the continuation transmission service means is activated, whereas, when the result of measurement by the interruption duration measuring means is longer than the predetermined time, the initialization start transmission service means is activated. Thus, when the power supply recovers from a power failure, for example, the system can recover from the transmission interruption state rapidly and shift to the normal process control operation promptly.
摘要翻译：包括负责控制操作的控制站和通过远程输入/输出总线连接到控制站的远程输入/输出设备的分布式控制系统。在正常状态下，通过使用远程输入/输出总线执行循环扫描传输，使得由控制站处理的输入/输出数据和远程输入/输出设备侧的输入/输出数据保持等效。控制站设置有继续传输服务装置，其首先执行用于紧急输出的传输，然后在紧急输出的传输完成之后执行正常的循环扫描传输服务;初始化开始传输服务装置，其首先执行循环扫描传输，以及用于测量远程输入/输出总线的传输中断持续时间的中断持续时间测量装置。当由中断持续时间测量装置进行的测量结果比预定时间短时，继续发送服务装置被激活，而当中断持续时间测量装置的测量结果比预定时间长时，初始化开始传输服务装置被激活。因此，当电源从电源故障恢复时，例如，系统可以快速地从传输中断状态恢复，并且迅速转移到正常的处理控制操作。

IPRDB

热门服务

关于我们

友情链接

联系方式