2016/7/28 8:49:24 来源: 厦门泰尼电气有限公司
1784-CF128
1784-CF128
1784-CF128
由运行WinCC或其他组态软件的PC上位机与S7-300PLC下位机用网络相连,上位机负责监控与编程,下位机负责数据采集与控制;那么,这种结构属不属于严格意义上的DCS? 是不是像北京和利时的DCS系统,浙大中控的DCS系统,上海新华的DCS系统等等,才属于DCS控制?
答:由运行WinCC或其他组态软件的PC上位机与S7-300PLC下位机用网络相连,上位机负责监控与编程,下位机负责数据采集与控制;这种结构属属于小型的DCS。像北京和利时的DCS系统,浙大中控的DCS系统,上海新华的DCS系统等等属于大中型DCS控制。大型的DCS的模拟量采集和PID调节回路更新率和可扩展性要比PLC的更短更强。但是两种技术是互相借鉴的,以前的DCS都是板卡框架式居多,现在也向模块化靠拢。
现货,现货,降降降,火火火,火火火……
现货,现货,降降降,火火火,火火火……
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