在这种情况下仅需下载修改过的内容(而不是
全部覆盖)，对其它未经修改而正在运行的程序不会造成任何影响，从而保证生产过程无扰。
操作管理级主要包括操作站、工程师站、数据网关、管理计算机及相应软件，另外还包括打印
机、操作台等辅助设备。操作站的任务是生产监控，即综合监视来自过程控制级的所有信息，进行监
示报警、趋势生成、记录、打印输出及人工干预操作(发送命令、修改参数等)。工程师站用于系统
软件组态和调试投运，它无需永久性接入系统，操作站也可兼作工程师站(需按工程师权限登录)。
调试期间CBF (Control Builder F)需从conf iguration(组态)方式
切換至commiss ioning (调试)方式，才可调用专门的编辑器以显示组
态好的程序。与组态时不同，调试时可显示I/0变量的实时值以及数
字信号的实时状态(0或1)，例如FBD图中数字信号线的外形变化(实
线或虚线)就反映其状态。过程变量的当前值可同时反映在数值窗口
与趋势窗口中，为功能测试与调整提供了极其方便的手段。
standard
In addition to this content, many powerful and rigorously tested function blocks from actual engineering applications have been expanded. any complex control
The scheme can be realized by the combination of these function blocks.
The function blocks provided by the system mainly include the following categories:
o
Analog processing
o
digital processing
loop regulation
Logical sequence control
c
logic operation
Monitoring function
In addition to this content, many powerful and rigorously tested function blocks from actual engineering applications have been expanded. any complex control
The scheme can be realized by the combination of these function blocks.
The function blocks provided by the system mainly include the following categories:
o
Analog processing
o
digital processing
loop regulation
Logical sequence control
c
logic operation
Monitoring function
Collection function.
c
arithmetic operations
c
TCP/IP protocol communication
