Industrial PC USB serial common failures and solutions

Industrial PC USB serial common failures and solutions is a kind of external USB bus standards, can be used for the connection and communication between the industrial computer and external equipment. In general, when the industrial personal computer peripheral equipment and industrial personal computer universal serial bus (usb) interface connection, it can be automatic identification of industrial personal computer and work properly. However, in some universal serial bus (usb) devices connected to the industrial personal computer, often appear the following faults: 1. Industrial computer can automatically recognize the USB device, install the device driver is normal. After installing the driver, however, found that cannot access equipment, the contents of this number is can't find the device driver, cannot use the equipment. 2. Industrial personal computer can automatically identify the USB device. USB device of signal light is not bright or abnormal state. Even if the USB device will be unusual sound. For example, if you don't provide enough power for USB hard drive, often hear hard disk 'click' abnormal operation. 3. When there is no connect USB devices, industrial control computer can normal boot, but once you connect USB devices, industrial control computer can't start properly, there will be errors, such as can not find the boot file or startup file damage. 4. Industrial control computer can automatically identify u disk, u disk contents can be accessed, but u disk access speed is slow, long time u disk will suddenly go wrong at work, or industrial control computer will shut down for no reason. If the above problems, first consider whether the power of the industrial control computer. If it is caused by a lack of USB device power supply. Can according to the following rule out step by step 1, for example, industrial personal computer in some speed extremely fast mobile hard disk working current sometimes has reached 1 a standard, its power has more than twice the normal power. Must provide a separate external power supply, to ensure the stability of the USB device and the operating system. 2, universal serial bus (usb) device manufacturers usually provide universal serial bus (usb) device for several different interfaces. Once a device cannot get enough power from USB interface, you can also use other interfaces to connect, low power consumption so as to ensure the normal use of USB devices. 3, under normal circumstances, the power of the industrial computer for each of the USB interface to 0. 5 a, if the USB device in normal working conditions of rated current exceeds the standard, industrial PC cannot accurately identify USB devices. At this point, the only feasible method is to select the USB device or independent low-power power supply the USB device, in order to ensure the normal operation of the USB device.