Overview and application areas of RS485 to Ethernet

Various interfaces are updated very quickly nowadays with continuous development of Internet of Things technology, main function of RS485 to Ethernet is to provide the function of serial port to TCP/IP network interface, it can convert RS232/485/422 serial port into TCP/IP network interface to realize bidirectional transparent data transmission between RS-232/485/422 serial port and TCP/IP network interface. This enables the serial port device have the TCP/IP network interface function immediately and connect to the network for data communication, which greatly extends the communication distance of the serial port device. Next, let us introduce the product features and technical parameters of the RS485 to Ethernet converter in more details, just take a look.

Features of RS485 to Ethernet：It integrates TCP, UDP, ARP, HTTP, ICMP, DNS, Socket5 and other protocols, can support dynamic IP and static IP, supports gateways and proxy servers, and can transmit data through Internet. RS232/485/422 serial port selection is available, RS485/422 serial port data automatic control, provide Chinese and English setting wizard, convenient setting, provide virtual serial port program and the virtual serial port interface of the original system, just change the settings of serial port of original system without no more changes.

Three communication modes can adapt to various on-site situations.

1.Virtual serial port communication mode

Establish one or more virtual serial ports and serial port program interfaces on the computer, manage one or more serial port servers through the network, enable the serial port devices connect to the virtual serial ports to exchange data with the computer.

2.WINSOCKET communication mode

The network program in the computer or the communication device directly based on WINSOCKET is directly connected to the serial port server through TCP, thereby performing two-way transparent data transmission with the corresponding serial port device.

3.Point-to-point communication mode

Serial port servers are used in pairs, one act as client and another one act as server, they establish TCP connection so as to enable two serial port devices to transmit data transparently through the TCP/IP network directly.

Flexible configuration of two working modes:

1.Server-side working mode

As a server, serial server waiting for other network devices to initiate TCP connection with it, it is suitable for situations when serial device is completely controlled by other devices and passively receive and send data.  

2.Client operating mode

As a client, serial port server actively initiates TCP connections to other network devices, which is suitable for situations when the serial port device actively connect to the main control device.

RS485 to Ethernet application areas

Many people has come into contact with the access control and attendance system in life and work, as a digital management system, it is widely used to control employee access and attendance, which has positive significance for company management.

As RS485 bus is simple and easy to use, a considerable part of the data transmission lines in the access control and attendance system use RS485 bus as the transmission line. It is enough to use RS485 bus if office areas located in the same office building, if you want to unify manage different office areas or even office areas in different cities, data transmission must be carried out through Internet.

As technology becomes more and more mature, RS232/RS485 converters are used more and more widely such as automatic banking systems, access control and attendance systems, POS charging systems, food sales systems, computer room monitoring systems, building monitoring systems, power supply monitoring system etc.