Common communication problems with serial device servers used in data loggers
The data logger can record available data, but if you can't retrieve it, then the data won't fully play its role. In order to ensure the data can be retrieved successfully, it is necessary to resolve issues that may arise when communicating from the serial device server to the data logger. The following text summarizes six most common problems and explains how to solve these problems easily.
What is the international name of serial device server?
Serial device server, also known as serial line end server or port redirector internationally, is a device that transfers data between computer serial port (COM port) and Ethernet local area network (LAN). This allows Ethernet to be used to replace serial port devices, reducing workstation clutter to the largest extent, and allows serial devices to be placed far from the computers that use them.
Detailed analysis of the difference between 4G routers and 4G Modems
4G industrial wireless routers and 4G Modems, both two are used for wireless network data transparent transmission of industrial equipment. However, both have obvious differences, the differences between the two are distinguished mainly from the three aspects of appearance interface, usage method and application environment.
What is industrial RTU?
RTU is the basic composition unit of the SCADA system. RTU is an electronic device installed at a remote site to monitor, measure, and collect sensors and equipment installed at remote sites, responsible for monitoring and controlling live signals and industrial equipment. RTU converts the measured status or signal into a data format that can be sent over the communication media, it also converts the data that is sent from the central computer into commands to realize functional control of the device.
Characteristics of USRIOT I/O Network controller
IO network controller is a device to realize remote acquisition and control in industrial projects, generally IO network controller provides functions such as switching value input acquisition, relay output, pulse counting, etc. IO network controller has RS485 serial ports for easy access to terminal equipment. At the same time, it can select different networking ways such as GPRS, WIFI, Ethernet, which can be used in more projects environment.
USR-WIFI232-602 serial to WIFI converter
USR-WIFI232-602 serial to WIFI converter is a transparent transmission device of the company, the product has the characteristics of stability, high performance and high cost performance. It is a proven industrial grade product that can transfer large amounts of data while ensuring high speed. At the same time, this product has bi-directional transparent transmission function, strong anti-interference, also has simple and powerful application software, which can be set on web pages, mobile apps, PCs and tablets. Its strong performance and humanized user experience have always been favored by users.
The difference between power modem and ordinary modem
The difference between power modem and ordinary modem is mainly resisting the disturbance from the environmental factors and special transmission protocols.
What are the functions of Industrial 4G LTE Modem of USRIOT?
Industrial 4G data transmission terminal is an IP modem terminal based on a cellular wireless communication network, it is a 4G serial converter specially used for converting LTE/TDD/FDD serial to wireless data or wireless to serial data. The 4G Modem product of USRIOT is Industrial 4G LTE Modem-USR-G781.
The difference between the GPRS module and the GSM module
The GSM module is a functional module that integrates a GSM radio frequency chip, a baseband processor chip, a memory and a power amplifier device on a circuit board, having an independent operating system, GSM radio frequency processing, baseband processing and a standard interface. Both GPRS module and GSM module belong to the type of data wireless transparent transmission modules, which are often confused by people.
Key technology of serial to Ethernet: work mode of TCP/IP
Serial to Ethernet, it is not a simple physical layer and data link layer transformation. Since the serial port protocol itself does not have a network layer and a transmission layer, serial to Ethernet, it is that the serial port data is used as the application layer data of TCP/IP, and the TCP/IP encapsulation transmission method is used. The application layer data of TCP/IP is really valid data that TCP/IP transmits. For example, the user actually receives and sends the application layer data through the socket's recv() and send() functions. In this way, through serial to TCP IP, users can use the recv() and send() functions to send and receive serial data.