一次性环保餐具设备控制系统的研发成功主要依赖于以下几个方面：

The successful development of disposable environmental protection tableware equipment control system mainly depends on the following aspects:

1、需求分析比较明确。需求分析是系统开发的基础，明确的需求分析是明晰业务流程和系统功能的关键所在。

1. The demand analysis is relatively clear. Requirement analysis is the basis of system development, and clear requirement analysis is the key to clarify business process and system function.

2、在设计上充分考虑了操作简单、维护方便和可靠性上的晑求。控制面板设计简洁明了，PLC选型合理，资源分配设计合理。

2. In the design, the requirements of simple operation, convenient maintenance and reliability are fully considered. The control panel design is simple and clear, the PLC selection is reasonable, and the resource allocation design is reasonable.

3、周全考虑了成型机的内部结构和功能需求特点，采用简单明了的硬件接线设计。

3. Considering the internal structure and functional requirements of the molding machine, simple and clear hardware wiring design is adopted.

4、在控制软件的设计上，合理的选择了程序结构，采用了步进指令+高阶指令的程序结构、从而解决了扫描时间过长的问题。

4. In the design of control software, the program structure is selected reasonably, and the program structure of step instruction and high-order instruction is adopted, so as to solve the problem of long scanning time.

接下来我们来具体了解该餐具设备控制系统的各组成特点：

Next, we will specifically understand the characteristics of each component of the tableware equipment control system

一、控制面板：

1、 Control panel:

在一次性环保餐具设备控制面板的设计上主要考虑系统控制操作的方便，避免引起误操作;另外，需要考虑系统硬件接线的方便、系统线路检修的方便以及面板整体的美观。

In the design of disposable environmental protection tableware equipment control panel, the convenience of system control operation is mainly considered to avoid misoperation; In addition, we need to consider the convenience of system hardware wiring, the convenience of system circuit maintenance and the overall beauty of the panel.
                        

二、资源分配设计：

2、 Resource allocation design:

资源的分配主要涉及到输入和输出点的确定，对应的功能按钮以及功能的描述等，具体参见表1。为了越加清楚的描述资源的分配，表中同时列出了PLC的一些内部资源的分配，包括时间继电器和中间继电器。

The allocation of resources mainly involves the determination of input and output points, corresponding function buttons and function description. See Table 1 for details. In order to more clearly describe the allocation of resources, the table also lists some internal resource allocation of PLC, including time relay and intermediate relay.

三、硬件线路和软件设计：

3、 Hardware circuit and software design

硬件线路的设计比较简单，根据资源表就可以对PLC的外部接线进行设计。软件的设计相对比较复杂，先需要绘制软件程序流程图，从图中可知，控制程序主要有3个分支，即点动、自动和单步执行。

The design of hardware circuit is relatively simple. According to the resource table, the external wiring of PLC can be designed. The design of the software is relatively complex. First, we need to draw the flow chart of the software program. From the chart, we can see that the control program mainly has three branches, namely inching, automatic and single step execution.

一次性环保餐具设备系统的控制程序采用厂商提供的 PFSOFT开发工具进行开发，把 PFSOFT软件安装在PC机上，PC机与PLC相连，打开 PFSOFT开发界面，编写LC控制梯形图程序，梯形图程序下载到PLC中，可以在PLC上进行模拟调试，调试平台采用“电气控制与PLC实验平台开始采用常规控制指令进行编程，虽然功能上实现没有问题，但由于功能比较复杂，程序比较长，以致PLC对程序的扫描时间过长，不符合成型机控制的要求。放弃常规控制指令结构，而采用步进指令+高阶指令的程序结构，使得程序结构越加明晰，程序长度大大缩短，程序的扫描时间达到控制的要求。

The control program of disposable environmental protection tableware equipment system is developed with pfsoft development tool provided by the manufacturer. The pfsoft software is installed on the PC, and the PC is connected with the PLC. The pfsoft development interface is opened, and the LC control ladder program is written. The ladder program is downloaded to the PLC, and the simulation debugging can be carried out on the PLC, The debugging platform adopts "electrical control and PLC", and the experimental platform begins to use conventional control instructions for programming. Although there is no problem in function realization, due to the complex function and long program, the PLC scanning time for the program is too long, which does not meet the requirements of synthetic machine control. By abandoning the conventional control instruction structure and adopting the program structure of step instruction and higher order instruction, the program structure becomes clearer, the program length is greatly shortened, and the scanning time of the program meets the control requirements.