Connection Problem of Serial Device Server
After the connection is established, the device sends unknown characters to the server. Reasons: Maybe use Telnet to use Telnet protocol (This phenomenon will only exist in the old firmware, which is the firmware version <2008, this problem does not exist in 2008 and later firmware.)
Dropout and Re-connection Problems of Serial Device Server
The serial device server has dropout and re-connection problems every once in a while:
The Difference between GSM and GPRS
1.GSM is the abbreviation of Global System for Mobile Communications.2.GPRS is the abbreviation of General Packet Radio Service.3.GPRS is a packet data bearer a
Serial Device Server Cross-Network Segment
If the IP of the device is not in a network segment with the communicating PC, and it is directly connected to the network cable, or is under the same sub-router, then the two cannot communicate at all. For example, device’s IP: 192.168.1.66 sub network mask: 255.255.255.0 PC’s IP: 192.168.0.161 sub network mask: 255.255.255.0
Multiple Network Card and Firewall Problems of Serial Device Server
Multiple Network Card and Firewall Problems of Serial Device Server Multiple network card and firewall problems There are a lot of situations in these two prob
How to Switch the RS485 Interface of Multiple Serial Device Server
Most of the projects that use Ethernet for networking today use RS232 or RS485 interface, and the usage share of the RS422 interface is relatively small. However, in order to meet the needs of the public, the serial port is usually made into a mode that can switch interfaces freely. For example, USR eight serial device server USR-N668.
Industrial M4 Serial-to-Etherent Products WebSocket Function
This manual is to introduce M4 series serial-to-Ethernet products WebSocket function.
Introduction M4 series serial-to-Ethernet products support WebSocket function which can achieve real-time interaction between serial port and Web Server and display user data on Web Server.
Introduction of Serial to Ethernet Converter-USR-TCP232-410S
Serial to ethernet converter USR-TCP232-410s is an ultimate serial converter connect to RS232/RS485 based equipment across an ethernet network enable you to replace serial dial-up modem connection.To realize two-way transparent transmission between COM Ethernet and TCP/IP,manage COM on remote device over network. To communicate to multiple serial devices at the same time across a LAN or WAN network.
The TCP Client Function and TCP Server Function of Serial Device Server-USR-TCP232-410S
Serial Device Server-USR-TCP232-410S supports dual sockets mode. Socket A supports TCP Server, TCP Client, UDP Server, UDP Client and HTTP Client. Socket B supports TCP Client and UDP Client.
This article introduces the TCP Client Function and TCP Server Function of Serial Device Server-USR-TCP232-410S.
GPRS Application Scenario
GPRS Application Scenario