The RS232 code scanner of the express cabinet is usually a serial communication interface, which can be connected to a computer or other device through a serial line (such as USB or RS232) to realize data transmission and communication.

Specifically, the RS232 code scanner of the express cabinet usually scans the bar code or QR code on the express delivery form, and transmits the scan results to a computer or other device through a serial line. In this way, couriers can quickly and accurately record express delivery information and improve work efficiency. At the same time, since code scanners usually have high sensitivity and high precision, the accuracy of the scanning results can be ensured.

In addition, some RS232 code scanners in express cabinets also have other functions, such as data storage, battery life, etc. These features can further improve the efficiency and convenience of couriers.

The differences between RS232 and TTL interfaces include but are not limited to the following aspects:

The logical meaning of level representation is different: RS232 and TTL are different in hardware (mechanism). The most fundamental difference is that the logical meaning of level representation is different. RS232 uses positive and negative logic levels, while TTL uses high and low levels.

Different application scope: The RS232 interface has a wider application scope than the TTL interface. TTL level is generally used for communication between chips, while RS232 interface can be used for communication between various devices, such as computers, modems, printers, etc.

Different transmission distances: Since the RS232 interface uses positive and negative logic levels, the anti-interference performance of the line is improved, and the longest distance can reach about 15 meters. The transmission distance of TTL level is usually shorter, generally within a few meters.

Different transmission methods: RS232 interface supports full-duplex or half-duplex transmission, uses balanced drivers and differential receivers, and is suitable for long-distance communication. The TTL level can only carry out point-to-point communication.

Different connection methods: The connection method of TTL level is relatively simple, you only need to connect the output terminal and the input terminal correctly. The RS232 interface requires the use of connectors such as DB9 or DB25, and the connection is slightly more complicated.