PLC key test and debugging integrated board

Introduction:
         PLC is the control heart of modern industrial equipment and automation equipment. It is used in all walks of life and cooperates with human-machine interface, Internet of Things, etc. It makes the development of industrial control field faster and faster. Miniaturization, integration and intelligence are the future development trends.
               The picture shows the mainstream PLC host and the domestic PLC development board imitating Mitsubishi programming.
 
My monologue:
   The major I studied in high school and university was electrical automation control. I usually come into contact with industrial control components such as PLC, servo, touch screen, and inverter. After graduation, it is natural to work in the manufacturing industry. In addition to repairing equipment, I do the most old equipment transformation, equipment debugging, and new product production program improvement. Repairing equipment is relatively fast. After finding the fault, it is generally faster to deal with the symptoms and solve the problem. Unless it is a major mechanical failure, it may take two to three days of maintenance time. What gives me the most headache is the debugging program, including the transformation of old equipment and some improvements to the equipment program for new product production. Because most automated production lines may need to debug the program in a short time of about one month, and the long time may take half a year or even a year. Because it is an automated production line, it may take about a month to debug the program, and it may take half a year or even a year to debug the program. In order to verify the feasibility of the program you wrote, you often use the simulation mode of the PLC software to debug it. However, when the input and output of the PLC reaches a certain number, you will have a headache. Some signals may pass in an instant, and you often don’t notice it. However, if you debug directly on the equipment, your newly written program may collide with the machine and cause the equipment to be scrapped. For example, a small device may have about 50 or 60 input and output points. For example, if you connect 20 input buttons, I think it is a waste of time. And if you are not a debugger, you are a novice who has just learned PLC. You know how to connect buttons to PLC, but you think it is too troublesome to connect so many buttons after programming during the learning period. I have been very numb to the matter of connecting buttons to PLC since I was a novice, and its wiring is mechanical, and basically it will not change. If you have learned the wiring, you will feel a headache if you keep connecting buttons, let alone connecting ten. I connect four buttons for debugging. I also feel very headache, and I have to connect the lines.
 
Design:
   So I thought, why not integrate the buttons and switches on one board? I used Jiali Chuang EDA to make this test and debugging board. The first function is that it can detect the quality of PLC input and output, and it can also be used when learning to debug the program. After integrating it on a board, whether you are a novice or a debugger, wiring will become very convenient and you will have a lot of time to debug the program, saving a lot of time to wire and adjust. You may even accidentally connect the wrong line. This board is the best learning partner for novices who are just starting to learn PLC. For those veterans who debug programs and verify whether their programs are written correctly, there is a lot of time left to wire and debug the program, which is simply the greatest blessing.
 
 
Function introduction:
1. Normal button function (button replacement, no self-locking)
These small buttons without self-locking can be physical buttons, some signals that are disconnected after being connected
2. Combination signal function (dip switch)
is used to replace certain limit, stop buttons (normally closed), start conditions, etc.
3. It is compatible with the input connection of the whole series of PLCs.
Whether it is Mitsubishi, Siemens, Omron, Delta, Panasonic... mainstream PLC products or domestic PLC development boards, they can all be used for debugging and learning.
 
About the two versions of the board:
There are two versions of this test and debugging board. The first version is a low-profile version. After it was completed, I gave it to my colleagues and partners for trial, but the effect was good. After everyone gave it unanimous praise, I designed the second version, which is a version with input signal indication. It can show whether your current input is NPN type input or PNP type input. The second version is longer in size and the number of points has increased. Basically, a 40-point PLC can be fully connected.
Version:
First version:
Size: 95mm*72mm
Input points available: 16 points
Note: It basically meets the daily learning and debugging needs of beginners, novices and debuggers, and can be used for free proofing.
Second version:
Size: 250mm*71mm
Input points available: 24 points
Note: Deluxe version, with signal indication, no free proofing, proofing price is about 62.
                                                                                        The picture shows the finished wiring of the PLC test and debugging integrated board
 
:
   Here, Mitsubishi is used as an example. The wiring here can use a double male DuPont line, and the X points are connected accordingly. The Siemens and Omron inputs may be I and O It doesn't matter, just connect them in order. The place marked with the switch power supply on the board can be used with the internal switch power supply of the PLC (the input does not have much current) or an external switch power supply. The S/S marked on the PLC host is the common terminal. When the switch power supply terminal, the silk screen corresponds to the positive and negative of the connected power supply, then the S/S terminal is connected to the negative. Conversely, when the switch power supply terminal, the silk screen corresponds to the power supply connection method, then the S/S terminal is connected to the positive. (No matter how you connect it, there will be no risk of short circuit and it is very safe. If there is no response after connecting, first check whether the 24V terminal of the switch power supply is in place, and then change the wire of the S/S terminal. (If you don't know how to do it, the dumbest way is to leave the wiring at the 24V switch power supply end unchanged, and change the wire on the S/S terminal to another hole.)
 
Board details display:
Now you can debug the PLC program at home, If the input is not enough, two or three boards can be put together. Basically, the simulation in the PLC software is no longer needed. You can find a junk disassembled PLC on Xianyu. You don’t have to squat next to the equipment every day and listen to the high-decibel sound of the vibration plate. You can debug it quietly at home for three or four weeks to change the program. The distribution box is also connected. The program is directly written. After a little debugging, the debugging work is completed immediately. Ga Ga Easy!!! Ga Ga Happy!!!!!!!!!!!!
 
Conclusion:
After the test and debugging board is completed, beginners or debuggers who are learning PLC can learn and debug by directly installing the board with a single PLC host at home. According to the program you wrote, press the corresponding button, turn the dial switch, and see the status of point Y. If conditions permit, you can put the output on the street to make the motor turn and the solenoid valve work, making programming and debugging easy and interesting!
 
Here is a video of the mechanical mobile bed loading and unloading after debugging:
For detailed information, see the attachment