Introduction
A serial port server is a device that connects serial communication devices to the network, allowing traditional serial port communications to be transmitted and managed over the network. It is widely used in industrial automation, the Internet of Things, medical equipment and other fields.
EBYTE Single serial port server recommendation
EBTYE OEM/ODM NB114 Factory sales New product Long-distance and efficient Data transparent transmissio Serial to Ethernet server
[Interface]：UART（RS485、RS422、RS232）、ethernet（RJ45）
[Size]：82*84*25mm
[Weigtht]：126g ± 5g
[Introduction]：NB114 is a serial server that realizes serial data ⇌ Ethernet data conversion.The product comes with RJ45 interface and guide rail installation.With multiple Modbus gateway modes, it can meet the networking functions of various serial devices/PLCs.
Working principle
The core working principle of the serial port server is to convert serial data into network data and vice versa. The specific process is as follows:
Data reception:
The serial port server receives serial data from connected serial devices (such as PLCs, sensors, instruments, etc.).
Supported serial interfaces include RS232, RS485 and RS422.
Data encapsulation:
The received serial data is encapsulated into network data packets, usually using TCP/IP or UDP protocols.
Necessary protocol header information can be added during the data encapsulation process to ensure data integrity and correctness.
Data transmission:
The encapsulated network data packet is sent to the target network device (such as server, PC, cloud platform, etc.) via Ethernet or Wi-Fi.
After receiving the data packet, the network device decapsulates it and restores it to the original serial data.
Data transmission:
Reverse process: decapsulate the data packets received from the network device and extract the serial data.
The serial data is sent to the connected serial device through the serial port interface.
Technical architecture
The technical architecture of the serial server usually includes two parts: hardware architecture and software architecture.
Hardware architecture
Processor:
The serial server has a built-in processor for data processing and protocol conversion.
Processor performance directly affects data processing speed and response time.
Memory:
The memory is used to store operating systems, applications, and temporary data.
Includes flash memory (for firmware storage) and RAM (for runtime data storage).
Serial port interface:
Provides standard serial interfaces such as RS232, RS485, and RS422.
Some high-end models provide multiple serial port interfaces, which can connect multiple devices at the same time.
Network interface:
Provides Ethernet interface (RJ45) or wireless network interface (Wi-Fi module).
Supports 10/100/1000 Mbps network speed to ensure the stability and efficiency of data transmission.
Power module:
Provides stable power supply to ensure reliable operation of the device in various environments.
Some industrial-grade devices support wide-range voltage input and redundant power supply design.
Software architecture
Operating system:
Embedded operating systems (such as Linux, RTOS) are used to manage hardware resources and execute applications.
Provide a stable operating environment and rich network protocol support.
Driver:
Serial port driver and network driver are responsible for hardware interface management and data transmission.
Provide underlying support for serial communication and network communication.
Protocol stack:
The TCP/IP protocol stack is the core component of the serial port server, responsible for the encapsulation and decapsulation of network data.
Supports multiple network protocols such as UDP, HTTP, HTTPS, Telnet, etc.
Application layer:
The application layer software implements specific serial port to network data conversion functions.
Provides configuration management, data monitoring, logging and other functions.
Management interface:
Web interface or command line interface (CLI) is used for device configuration and management.
Supports remote management and firmware upgrades to facilitate user device maintenance.