I m looking for a primer on plc and so on 5

1.It is necessary to determine the PLC brand that you have learned. This is mainly to learn from the application of more applications in your future work. There are mainly Siemens, Mitsubishi, Omron, Schneider, Delta, Fengwei, Fujifilm and so on.

3.If you have the financial means, you can buy a development test chamber. When I was studying, I bought a Mitsubishi PLC FX1S-20MT. Omron's CP1E

4.Doing more practical work on the PLC by yourself is much better than reading a book.

5.Omron's operation is very similar to the use of registers embedded inside, which is more difficult to use, but Omron's PLC is relatively cheap, and the programming of the Mitsubishi series and imitation Mitsubishi series is simple and easy to learn. I use Delta a lot.

There are too many, so first pick up what you have in your hand and practice familiarity.

It's easy to get started,,It's not easy to learn If you have a physical exercise, you can get started quickly,,If you don't have a physical object, you can first look at the PLC book compiled by Liao Changchu (Siemens S7-200),And then take a look**,,Probably have to practice after the concept I hope it can help you。

You go to the "Industrial Control 365 Forum" to find it, where there is the primer you want.

PLC Learning.

First of all, buy a book about PLC (it is recommended to buy a book of "Electrical Control and PLC Application Technology" to take a look, the first half of this book talks about some commonly used electrical components and basic circuits in the electric control cabinet, and the second half talks about the application of PLC. It should be suitable, you can go to the bookstore to see. ）

And then there's a PLC on hand

Then, based on the examples in the book, you can figure out a small project on your own to implement a feature.

Finally, practice brings true knowledge, do a PLC project independently, the project is completed, the PLC will be mastered, the Siemens 200 series of small PLC is very suitable for novices to learn, it is relatively easy to get started.

First of all, it is necessary to understand the knowledge of electricians, understand the control of electrical appliances, understand various actuators, and then understand the working mode of PLC, input and output circuits, and finally understand the corresponding process.

1, learn PLC first of all to choose a good learning of which manufacturer's PLC, the Japanese PLC internal software integration is high application simple early OMRON, Mitsubishi application more, now due to the first and international cooperation between the application of Siemens PLC, Rockwell a little more, (although it is said that a brand is profound, others will soon get started, but people's energy is limited, must be used in the most widely used, potential, development of a direction, However, for each brand of PLC have some understanding, including imported, domestic, these have a corresponding understanding, for the characteristics of each PLC, advantages and disadvantages, these have a better understanding, then will be a rare talent in the market in the future. ）

2. PLC is not a single programming technology, it is a system professional course. A PLC can be broadly considered a highly reliable PC with an operating system embedded in the back. First of all, you need to be proficient in the programming language ladder diagram and sentence table language of the PLC itself.

At this level, you can only read the programmed programs and design some of the programs needed for the project. In this industry, it is also necessary to apply VB and VC to realize serial port communication and distributed control system. Knowledge of databases is also required in some large programs.

PLC is quick to get started, but you have to keep making an effort. ）

3. PLC is a discipline that focuses on the application direction. So a little more practice. Don't look down on small projects, where you can summarize the logical thinking method for designing programs.

Keep making progress in the summary. For example, every time you go to the site to debug, call the program on the site to view, from which to understand the structure of the program, and other programs are different and characteristics, then the progress will be faster, good luck!

With more programming, you will know that you can't, and you must be. I'm looking for information.

Electrician basics, software operation.

When you are a beginner, you can make some simple ladder diagrams, such as the AND, OR, and output of contacts, and run them in the PLC machine.

When the PLC is in the running state, the time required to perform a scanning operation is a cycle, which is one of the important indicators of the PLC, and its value is.

Scanning period t = (input - point time * number of input terminals) + (instruction execution speed * number of instructions) + (output time * number of output terminals) + fault diagnosis time + communication time.

From the above equation, it can be seen that the scanning cycle has determined: the speed at which the CPU executes the instructions, the time it takes to execute each instruction, and the number of instructions in the program. The time required for instruction execution and the length of the user program, the type of instruction and the CPU execution speed are very related, generally speaking, in the process of a scan, the time for fault diagnosis, communication, input sampling and output refresh is less, and the execution time is the vast majority.

The response time of PLC refers to the interval between the time of change of the external output signal of PLC and the time of change of external output signal controlled by it, called lag time, which is composed of the time constant of the input circuit, the time constant of the output circuit, the arrangement of user statements and the use of instructions, the cyclic scanning mode of PLC and the refresh mode of PLC to Io, etc., this phenomenon is called the I-O delay time effect, due to the cyclic scanning mode of PLC, The length of the corresponding time is determined to be related to the moment of receipt of the input signal, and the corresponding time is divided into the shortest and the longest.

Shortest response time: If an input signal is received just before the end of a scan cycle, and the input sampling phase is entered before the next scan cycle, the signal is sampled, which is the input update, and this response time is the shortest.

Maximum response time: If an input signal is received after the input delay and the time of the IO refresh is missed, the input signal will be considered invalid during the period, and it will not be read until the next scan cycle, which is the longest.

1.Programming requires strong perseverance and a lot of patience.

If you don't have enough patience to do it if you don't have enough patience to do it, you will basically have no hope of learning.

2.It takes the confidence to dare to practice.

No matter how good theoretical knowledge is, it is only on paper after all. We must dare to practice what we have learned, so that we can better understand the role of instructions and how to use them. Be bold and careful, bold time is the only way to program PLC.

3.Establish rigorous logical thinking.

Because programming itself is a process of logical thinking, how can you write a good program without good logical thinking?

4.Learn about it.

5.Be more communicative.

Don't do it alone, but learn to share and communicate with your peers, only in this way can you make faster progress.

6.Learning attitude.

If you don't have a proper learning attitude, no matter how much you learn, it's useless.

Novices learning PLC are recommended to get a PLC by themselves, and then learn by themselves according to the textbook, while watching and doing hands-on operation, and then enter an automation company after getting started to learn to do projects with the big guys, doing projects is the fastest way to improve their technology, and the specific learning method can be seen in the following answer:

Want to teach yourself PLC and start learning to read those books?

PLC is to learn how to convert circuit diagram into ladder diagram, which is the programming language of PLC.

Learning PLC programming is based on electrical circuits, and the better the foundation, the faster you can learn.

Therefore, first of all, it is necessary to lay a good circuit foundation, computer knowledge can not be less, and learning PLC and PC are inseparable

You need to learn simple electrical circuits to digital electricity and modular electricity, then learn PLC programming languages, programming software, and then start with programming instructions. Be sure to do more cases and open your mind.

Buy a PLC and come back to make a teaching aid, that is, it is equipped with a power supply, the input is connected to the button or switch, and the output is connected to the indicator light. Find some information and practice more. There is a lot of information on the Internet, and I also have it here. Practice is the only rule of thumb.