可编程序控制器的步进顺序控制功能

PLC Stepping Sequence Control Function

步进顺序控制是可编程序控制器的优势功能 ,编制步进顺序控制程序的有效方法是画出功能表图。功能表图的组成元素有工步及动作、有向连线、转换及转换条件等。功能表图的结构形式有单行序列、选择序列、并行序列、混合序列等 ,它取决于实际系统的控制要求和特点。功能表图可转换成梯形图。

The advantage function in PLC is stepping sequence control, the efficiency method of establishment the stepping sequence control program is drawing out the function diagram. The function diagram forming elements are working steps and motion, there are direction connecting, change and change condition etc. The function diagram construction form are monomial series, select series, paralleling series, mixed series etc, it is decided on actual system control requirement and characteristic. The function diagram can be changed over ladder diagram, the directive table is easy to use and input program.