1. Overview KB2000 is RS232 / 485 to TCP / IP data protocol converter (dedicated to Internet data communication), which provides data transfer RS232 / 485 to a TCP / IP network and the TCP / IP network to the RS232 / 485, and it is from the conversion Data received on the RS232 / 485 serial port, transparent data transmission to the data server on the network, the data sent by the server via the network through its transparent sent to the RS232 / 485 serial port on the converter. That is, as long as the two were connected to the serial port of KB2000 on different computers or serial devices, network ports are access to the Internet, different computer or device can be used to communicate data over the Internet. The KB2000 provides up 10M / 100M Ethernet interface, down to provide a standard RS232 (or RS485) serial port, 16K cache communication, communication parameters can be set by software, the baud rate from 300bps ~ 115200bps. KB2000 applicable to a variety of network environments, network parameters and serial port parameters can be set using the KB2000 setup software, can also be set by the user program. KB2000 is divided into two types: A type (KB2000-A), which is mainly used for master models, such as the operation control center, it is usually connected to the computer equipment; B-type (KB2000-B), this model is mainly used for the station, such as remote terminal, it is generally connected to the user equipment device, the field of instrumentation and the like. The main application (based on Internet): water, electricity, gas remote automatic meter LED display information transmitted Hydrometeorology POS machines networked data acquisition and transmission power automation, distribution transformer monitoring station automation engineering industrial instrumentation equipment monitoring unit chain or transnational network 2. 2.1 interface and display indicator LED1: LED lights above for the two-color lights. Usually received a green light network cable (not connected does not light), flashing red light when the serial communications. LED2: The following LED lights for color lights. Power-bright red, indicating the power is normal. Displays green when the application layer connection, will be lit when connected to the server. 2.2 Network Interface NET: RJ45 interface, the interface will KB2000 access via TCP / IP networks. Serial and Power Interface: support RS232 or RS485. Terminal No. Terminal Definition Remark 1 VCC Power: DC5-24V 2 GND Power ground 3 UTXD1 serial port (DTU serial / RS485 when A) connected to the receiving end user / RS485: A 4 URXD1 serial receiver (DTU serial / RS485 when B) pick end users to send / RS485: B 5 Output1 digital output terminal 1 6 Input1 switch input terminal 1 7 GND serial port to connect the user to 8 Output2 digital output terminal 1 9 STATUS line is high, dropped calls or weak signal for Low 10 Input2 digital output terminal 1