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    • 2. 发明授权
    • Monitoring and control system and method
    • 监控系统及方法
    • US5644487A
    • 1997-07-01
    • US138848
    • 1993-10-19
    • Stephen B. DuffJack S. Paltenstein
    • Stephen B. DuffJack S. Paltenstein
    • G05B19/05G05B23/02G05B11/01
    • G05B19/056G05B23/0216G05B2219/13015G05B2219/13037G05B2219/13108
    • In a distributed process-control system, program-controlled apparatus is provided for permitting an operator to control the mode of a Sequential Function Chart (SFC) to place the Chart in any of five different modes as a convenience in monitoring, editing and/or changing the SFC program. These modes are: OFF mode, for temporarily disabling operation of the SFC Chart, an AUTO mode which allows the SFC program and Chart to run as configured, a HOLD mode which freezes the chart in its current state, a MANUAL mode enabling the operator to force the Chart to an operator-selected step while the output of the current step is maintained active, and a TRACE mode enabling the operator to view the steps in the Chart sequentially, and to force the steps without executing them.
    • 在分布式处理控制系统中,提供了程序控制装置,用于允许操作者控制顺序功能图(SFC)的模式,以将图表放置在五种不同模式中的任何一种中,以便于监视,编辑和/或 更改SFC程序。 这些模式为:OFF模式,用于临时禁用SFC图表的操作,允许SFC程序和图表以组态方式运行的AUTO模式,在当前状态下冻结图表的HOLD模式,使操作员能够 在当前步骤的输出保持活动状态下强制图表到操作员选择的步骤,以及TRACE模式,使操作员能够顺序地查看图表中的步骤,并强制执行这些步骤。