What should I do if the cash register scanner cannot scan the code?

Scanners are one of the common accessories for cash registers, and are commonly used in supermarkets, convenience stores, smoke hotels and other industries. It is very convenient to read the product name and price by scanning the bar code on the product, and it is very convenient for the supermarket industry. What should I do if the scanner does not scan the code?
First, confirm whether the cash register scanner emits a sound when scanning, that is, if the barcode is correct, there will be a "drop" sound, if there is no "drop" sound. Just do the following

(1) Whether the scanner is not operating correctly, the scanning distance is too close or too far from the barcode.

(2) The scanned bar code system is not turned on in the scanner.

(3) The barcode itself has problems, such as unclearness, damage, and printing distortion.

If there is a "drip" sound, then do the following

(1) Check if there is a problem with the data line. Try changing a data cable.

(2) Whether the scanner is a serial scanner, the serial scanner needs to be tested in the HyperTerminal.

(3) Whether the port, baud rate, etc. of the HyperTerminal are set correctly.

Telescopic Traction Rope

For the retractable towing rope, its advantages are:
â‘ The operation is flexible and simple, the braking is agile, and the grip is more comfortable;
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