Industrial Modem USR-G781 of USRIOT
Industrial modem developed by USRIOT conforms to the industrial grade design with complete functions and stable transmission. Its star product USR-G781 has a high repurchase rate and is highly praised by new and old customers. It is widely used in environmental protection, water conservancy, meteorological industry; industrial control; special environment, oil and gas, heating industry.
What is 5G?
"5G" actually refers to an industry standard, namely "the fifth generation mobile communication technology standard".
GPRS Module Room Monitoring Application Case
GPRS module room monitoring application caseFor many enterprises and institutions, there are more than one computer room, the nodes are distributed relatively m
Serial Device Server Can not Connect to the Server As a Client
Serial Device Server Can not Connect to the Server As a Client, First check if multiple network cards or firewalls are turned on.
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.