You can write it in chapters, but first, you have to be clear about what project you want to do with PLC. Here are your ideas for writing a PLC paper:

Chapter 1: You can write the development history of PLC, and you can also write the principles of mainstream PLC and PLC.

Chapter 2: It's time to get to the point, introduce the project you want to do, what kind of effect you want to achieve, what kind of hardware you want to use, count the I/O points and choose PLC.

Chapter 3: You can write a software program, the function of each part in the program, and finally write the final program in the paper.

Chapter 4: The simulation results can be written with PLC simulation software, or it is better to write the actual combat results if there is hardware, and the errors in the debugging process can also be written down;

Chapter 5: You can write your conclusion summary or something (similar to the acceptance speech O(∩_∩)O~)

Finally, write some thanks and documents, which I think is a perfect article! PLC paper, I wish you success! ! !