从功能块引脚和信号线的版面形式(粗细、颜色等)可以知道数
据类型。功能块参数定义的方法是在FBD参数对话框中行进行填空。完成后的FBD程序需经编译，检
查错误和语法。查出的错误或警告以列表显示，用鼠标单击表中某–行可直接转到相应的出错源址。
利用交叉参考功能，可迅速调出与错误对应的显示画面和程序并容易地找到相关变量和回路。
FRD的组态步骤如下:
1.定义FBD程序名称
5
2.调用FBD编辑器
功能&功能块
3.选择所需功能或功能块
4.将功能块放置在图形工作区
5.用信号流向线连接各功能块
6.键入输入输出变量
7.定义功能块参数
8.编译FBD程序
9.纠正语法错误
控制策略组态方法_顺序功能圉(SPC)
利用顺序功能图SFC可以方便地生成清晰的、图形化的顺序控制程序。要建立- -个SFC,需组态
要被执行的任务(命令)步(step)和允许执行下-步的步进条件(transition)，并为步和步进条件分配
功能块图、指令表或梯形图程序.顺序功能图的另-特性是能够产生选择性或并列性分支及对顺序结
构进行同步。
between the process station, operator station and engineering station takes place via the system bus DigiNetS (Industrial Ethernet). user
Different transmission media (RJ45 twisted pair, thin, thick or fiber optic cables and mixed media) and network topology can be selected for the system bus.
Simple layout, due to the use of TCP/IP protocol, the system can also use the public telephone network (dial-up mode) or satellite to achieve ultra-long-distance communication.
Subsystems such as PLC communicate with the Industrial” system through the ModBus protocol interface. The system also supports IEC870-5 over-control protocol.
discussion.
The Flash EPROM inside the PS provides more than 220 functional modules (control algorithm subroutines), in addition to the basic
