What is the function of a Ethernet to RS485 Converter and how to use it
The essence of the so-called Ethernet to RS485 Converter is a protocol conversion device. Because of its participation, the RS-232/422/485 serial port is converted into a TCP/IP network interface, which completes the two-way transparent transmission of data between the serial port and the network interface. At the same time, it also expands the scope of data transmission related to serial devices.
Fig.1
What does the Ethernet to RS485 Converter do?
1. Realize the networking of traditional equipment, so that remote control and network management can be realized
In the working mode, Ethernet to RS485 Converter is like a computer integrated with CPU, operating system, and TCP/IP protocol, which is specially used for serial port and network data transmission. In practical work, people use it to make electrical equipment (display screens, pos, card reader, card readers, refueling machines, test instruments, switches, etc.) With only serial interface easily realize Ethernet connection, so as to realize networking and remote control.
2. Easily reduce the workload of staff
Generally speaking, Ethernet to RS485 Converter itself is a multifunctional management interface, which can realize the common management of different serial devices by using a single interface and is not limited to a window system, a web system, or a Telnet system. At the same time, the transmission effect is still in the state of high efficiency and low latency, and the working efficiency is extremely high.
Users need to be reminded that before using Ethernet to RS485 Converter, parameters should be set and debugged according to different usage scenarios, and scientific and effective connection should be made in direct connection or Ethernet mode according to their needs, so as to play its role.
How to use Ethernet to RS485 Converter?
Ethernet To RS485 Converter can convert RS-232/485/422 serial port to TCP/IP network interface, which realizes bidirectional and transparent data transmission between RS-232/485/422 serial port and TCP/IP network interface. Or support the two-way transmission of MODBUS protocol. The serial port device can immediately have the function of TCP/IP network interface, connect the network for data communication, and expand the communication distance of the serial port device.
Fig.2
Device connection:
connect the serial port of the Ethernet to RS485 Converter to the serial port of the device, and connect the RJ45 interface of the Ethernet to RS485 Converter to the router (or directly connect to a PC). Then power on the Ethernet to RS485 Converter.
Configure serial port parameters:
The Ethernet to RS485 Converter can modify the parameters through the Web page. The Ethernet to RS485 Converter must be in the same subnet as the computer when the parameters are modified through the Web page. Serial port parameters include baud rate, data bit, stop bit, and check bit.
Configure network parameters:
The Ethernet to RS485 Converter must have an IP, which can be configured as static or obtained through a DHCP server. Configure the working mode of Ethernet to RS485 Converter, including TCP SERVER mode (the computer actively searches for Ethernet to RS485 Converter), TCP CLIENT mode (Ethernet to RS485 Converter actively looking for computers), UDP mode. The purpose of configuring the network parameters is to enable the computer to establish a connection with the networked server smoothly.
Enable virtual serial port:
Because the general user's PC software still opens the serial port to communicate with the device, at this time, because the network is used, a virtual serial port must be installed on the computer. The virtual serial port is responsible for establishing a connection with the Ethernet to RS485 Converter and forwarding the data to the user program that opens the virtual serial port. Run the user equipment communication program and open the virtual serial port. The user application can then communicate with the device.
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