Description
此协议标准只适用于Windows NT4.0以上。u OPC（OBJACT LINK EMBED PROCESS CONTROL）客户机，可以从服务器取数据。遵守TCP/IP协议。由于市场需要监控软件，因此，通用监控软件有许多厂商开发，在90年代，有如FIX、INTOUCH、PARAGON、ONSPEC、CIMPLICITY等100多种。国内有组态王、SYNALL等。对于监控软件如果开发了许多DCS和PLC的驱动软件，在联网时有许多网络套件，它就成为通用监控软件。其中驱动软件最多的是FIX和INTOUCH。在NT平台上，如果采用
FIX、INTOUCH等软件，彼此可作为服务器，也可作为客户机，彼此可以交换数据。DCS在70年代问世时，计算机技术水平还比较低，市场上可以选用的零部件比较少。DCS生产厂家自己开发的操作站有专用的操作系统、专用的监控软件、专用的接口硬件和CRT、专用的打印机、专用硬盘和软驱。甚至连接用的电缆和插头、插座也是专用的。
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