1. The Siemens S7-200 is relatively simple and can be self-study. At present, there are a lot of free plc video tutorials on the Internet, and there are also in the electrician forum.
2. S7-300/400 needs to learn too much content. It is recommended to first find a self-study book, and have a certain foundation and feelings to go to the training class later. The training class is generally only 4 or 5 days. If there is no foundation, the content of the teacher will not understand or keep up. If there is a certain foundation, the teacher will speak well and the harvest will be bigger.
3. Don't expect to become a master immediately after training. A good teacher teaches you the main method of learning S7-300/400. After the training, you also need to spend a lot of time and energy to read, program, and debug the program, and improve your level in countless mistakes and frustrations. Masters are piled up in time, and Rome is not built in one day.
An electronic clock device with a wireless network monitoring camera is characterized in that it comprises an electronic clock device body with a wireless network monitoring camera; the electronic clock device body with a wireless network monitoring camera is composed of a foot, a wireless transmission module, a It consists of a rechargeable battery, a speaker, a touch display screen, a camera, a casing, an infrared device, and a microprocessor; the feet are fixedly installed at the bottom of the rechargeable battery; a casing is fixedly installed on the top of the rechargeable battery, and the The interior is provided with a touch screen, a camera, an infrared device and a microprocessor; the microprocessor is electrically connected to the rechargeable battery through wires; the wireless transmission module, speaker, display, camera and infrared device are connected to the micro processor through wires The display screen is arranged at the bottom of the camera, and the camera is surrounded by an infrared device; the wireless transmission module is fixedly installed on both sides of the rechargeable battery, and the speakers are opened on both sides of the casing
Camera Watch,HD,HD1080
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