Programmable logic controllers (PLC) have been one of the most widely used controllers in industry. They have a graphical programming language interface resambling the relay panels which they are intended to replace so that the transition from relay panels might be swift and smooth. Although learning this programming language is easy, real life experiments are essential for students to gain greater understanding of the logic behind the language. However, it is generally too expensive to provide an experimental set-up for students to test their theoretical knowledge. For this reason, a conveyor and feeder system was developed as a low cost 3D printable design using a CAD program and implemented for use in a control laboratory. Using this conveyor set-up, students can experience how to program a practical example of a PLC devices used in industry together with an introduction to actuators and sensors. Reading actual sensors and using actuators via the inputs and outputs of a PLC to control a real life system will be far more effective than simulator alternatives.

可编程逻辑控制器（PLC）已成为业界使用最广泛的控制器之一。它们具有图形化编程语言界面，可以重新设置要替换的继电器面板，从而使从继电器面板的转换可以快速而流畅。尽管学习这种编程语言很容易，但是现实生活中的实验对于学生更深入地理解该语言背后的逻辑至关重要。但是，为学生提供测试其理论知识的实验装置通常太昂贵了。因此，使用CAD程序开发了一种低成本的3D可打印设计的输送机和进纸器系统，并将其实施在控制实验室中。使用这种传送带设置，学生将学习如何对工业中使用的PLC设备进行编程的实例，以及对执行器和传感器的介绍。读取实际传感器并通过PLC的输入和输出使用执行器来控制现实生活中的系统将比模拟器替代方案更加有效。