USB to serial port realizes the conversion between the computer USB interface and the universal serial port. Providing a fast channel for computers without a serial port, and using a USB to serial device is equivalent to turning a traditional serial device into a plug-and-play USB device. As one of the most widely used USB interfaces, one of the indispensable communication interfaces of each computer, its biggest feature is support for hot plugging, plug and play. The transfer speed is fast.
The most extensive field of modern industrial control should be RS232, RS485, and parallel port interface. It has a long history of development and is widely used in many fields. For example, some programming enthusiasts will use the serial port when using the programmer. There are also some mechanical control systems, access control systems, are inseparable to use RS232, RS485 to communicate. Traditional motherboards have this interface, but because of the different positioning of the motherboard market, many new motherboards do not have a serial port interface. For example, notebooks rarely carry these old-fashioned interfaces. Using the USB interface to replace most of the other communication interfaces, so that some motherboards encountered difficulties when connecting RS232 serial port or parallel port communication. In response to this situation, some vendors have introduced a series of products to solve this problem.
For most engineers, the main obstacles in developing USB2.0 interface products are: to face the complicated USB2.0 protocol, to write the driver of the USB device, and to be familiar with the programming of the microcontroller. This requires not only considerable VC programming experience, but also hardware (firmware) programs that can write USB interfaces. So most people gave up developing their own USB products. To simplify complex problems, you can use the USB to serial port module. This module can be seen as a USB 2.0 protocol converter that converts the computer's USB 2.0 interface into a transparent parallel bus, just like a microcontroller bus. So within a few days you can complete the design of the USB2.0 product.
The usb to serial port is an operation method that we often need to use. In actual operation, we only need to use a USB interface and serial port adapter cable to complete the application of the usb device in the serial device. However, we often encounter the problem of not being able to read the hardware after the conversion in the conversion, which is caused by the abnormality of the driver that installs usb to serial port in your computer. How can we properly install the USB to serial port driver? Below, I will introduce you to the correct installation method of usb to serial port driver.
The solution to the abnormal installation of usb to serial port driver varies depending on the operating system. According to the different systems, we will classify the solution of usb to serial port driver anomaly.
USB to serial port driver installation steps in XP system. We must first download the xp version of the usb to serial port driver, select and run after downloading. The driver software will be installed automatically. If the hardware can be used normally after installation, the driver will be installed. If you can't read the hardware correctly, we need to make some settings: First we open the device manager, find the ergonomic device option, right click to view the driver status. After finding the driver options, select Update, then find the driver we downloaded earlier and click OK. At this time, the system's protection prompt will pop up. We don't care about it. Click Next to install it. After installation, you will find that the hardware of the usb to serial port can be read by the computer.
USB to serial port driver installation steps in windows7 system. Win7 usb to serial port driver installation steps and the same part of XP are required to download the appropriate driver. After downloading, start the installation. Because the win7 system is in the security considerations, many computer self-protection projects are set up, and we need to make some settings before installation. The specific operation is as follows: After we find this driver, right click and select the administrator to run. This is the driver will be installed automatically. When selecting the installation location, remember to select the default installation location and do not change the installation location. After the installation is complete, we connect the USB to serial port interface to the computer. If the display hardware can be used normally, our usb to serial port driver is installed.
The abnormality of the usb to serial port driver installation is mostly due to the abnormal installation caused by the permissions of the computer system. Whether in XP system or in win7 system, if the usb to serial port driver is abnormal, only need to detect and obtain system permissions can solve the problem perfectly.
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