采用YS-80仪表作自动后备的YEWPACK-MARKIIDDC方式

The Direct Digital Control Using YEWPACK-MA-RKII With YS-80 Instruments as Automatic Bac-kup

介绍了用YS-80调节仪表的可编程序控制器SL-PC和单回路调节器SLCD作自动后备,用上位机的YEWPACK-MARKⅡ作直接控制的两种方式。采用此方法,当主机或通信系统发生故障时,控制系统能立即自动切换到SLPC或SLCD自动后备方式,从而使整个系统的可靠性得到提高。

Two Direct Digital Control modes using YE- WPACK-MARCⅡ with automatic backup of SLPC programmable controller and SLCD Si-ngle Loop Controller in YS-80 Series instruments are introduced. Control functions will be tran-sferred automtically to SLPC or SLCD mode when the host computer or communication sy-stem fails. By this method, the reliability of the whole system is enhanced.