In the vast world of Internet of Things (IoT), 4G modem  plays a pivotal role. It is like a data bridge in the Internet of Things system, which enables bidirectional transmission between local serial port data and network server. For those who are new to the IoT industry, understanding and mastering the deployment and configuration of 4G modemm is an important step towards practical IoT applications. This article will introduce this process in a simple and easy-to-understand way, helping everyone to gradually master the application of 4G modemm from scratch.

1. Know 4g modemm

The 4G modem, also known as a data transmission terminal, is a key device for implementing data pipeline transmission in the Internet of Things system. It utilizes TD-LTE or FDD-LTE 4G networks or other wireless communication technologies such as GPRS and 3G to achieve wireless long-distance data transmission between local serial port data and remote public network servers. This capability makes the 4G modem play an important role in remote data collection and remote control projects.

4G modemm usually has high-standard industrial design, which can withstand the impact of harsh industrial environments, such as moisture, lightning, electromagnetic interference, etc. At the same time, its low power consumption design and wide voltage range make the 4G modem more suitable for industrial sites where power access is difficult. In addition, the 4G modem also supports multiple online and offline triggering modes, remote configuration and upgrade, troubleshooting, and other functions, greatly facilitating remote monitoring and management of devices.

2.Deployment steps of 4g modemm

Hardware connection and inspection
Before deploying a 4G modem, it is necessary to ensure that the hardware is connected correctly. This includes whether the power cord, antenna, network cable, and other connections are secure, and whether the device can provide normal power and communication. In addition, it is also necessary to check whether the serial port and network interface of the 4G modem are in good condition to ensure the reliability of data transmission.

Network parameter configuration
The 4G modem supports multiple network access methods, such as GSM, GPRS, 3G, and 4G. When configuring network parameters, it is necessary to set them according to the specific network environment and requirements. This includes the configuration of information such as IP address, port number, gateway, and DNS to ensure that the 4G modem can successfully register with the wireless network and achieve data interaction with remote servers.

Serial port parameter setting
4g modemm usually communicates with devices through serial ports. Therefore, during the deployment process, it is necessary to set the serial port parameters, including baud rate, data bits, stop bits, and check bits. These parameters need to be consistent with the device side, otherwise normal communication will not be possible.

Selection of data transmission mode
The 4G modem supports multiple data transmission modes, such as transparent transmission mode, transparent transmission mode, and setting mode. When configuring the data transmission mode, it is necessary to choose the appropriate mode based on actual requirements. For example, when a large amount of data needs to be transmitted in real time, you can choose the transparent transmission mode to ensure the real-time and integrity of the data.

Working mode configuration
The 4G modem also supports different working modes, such as active mode and passive mode. When configuring the working mode, it is also necessary to set according to the actual needs of the device. For example, when it is necessary to actively report data, the active mode can be selected; When you need to wait for a server request before sending data, you can choose the passive mode.

3. Configuration method of 3G and 4G modem

The configuration methods for 4G modemm typically include local serial port configuration, network remote configuration, and SMS remote configuration. The following is an example of local serial port configuration:

Connecting the computer and 4g modem
Connect the serial port of the 4G modem to the serial port of the computer using a serial port cable, and pay attention to the serial port number of the connected computer. Then, open the serial port configuration software such as 4g modemm configuration software, and select the correct serial port number for connection.

Set the serial port parameters
In the serial port configuration software, set the serial port parameters to match the serial port settings of the 4G modem. This includes the configuration of baud rate, data bits, stop bits, check bits, and other related information. Ensure that these parameters are consistent with the 4g modemm terminal.

Enter configuration state
In the serial port configuration software, select the option to enter the configuration state. At this point, power on the 4g modemm and wait for it to enter the configuration state. In the configuration state, various parameters of the 4G modem can be configured through software.

Configure parameters and save
According to actual needs, configure various parameters of the 4G modem in the serial port configuration software, such as network parameters, serial port parameters, data transmission modes, and working modes. After configuration, click Save Configuration Parameters to save the settings.

4.Precautions and safety guarantee

When deploying and configuring 4G modemm, the following points should be noted:

Ensure that the firmware version is up-to-date: Regularly update the firmware version of the 4G modem to ensure the stability and security of the device.
Avoid harsh environments: Try to avoid configuring and operating in high-temperature, humid, electromagnetic interference, and other environments to avoid affecting the performance and stability of the device.
Follow the configuration guide: During the configuration process, it is important to follow the configuration guide provided by the manufacturer to avoid misoperations that may cause device anomalies.
Enhance security measures: Utilize data encryption technology, VPN encryption technology, and other security measures to safeguard the security and integrity of data during transmission. At the same time, regularly update the security patches of the device to deal with increasingly complex cyber threats.

5. Application Scenarios and Prospects

4G modemm is widely used in many fields such as urban air quality monitoring, sewage treatment detection, intelligent transportation, agricultural intelligent irrigation, industrial Internet of Things, and so on. Its strong data transmission capability and stability provide strong support for the intelligent transformation of these fields. With the continuous development of Internet of Things technology, the application scenarios of 4G modemm will be further expanded, bringing opportunities for intelligent upgrading and digital transformation to more industries.

It is not difficult to master the deployment and configuration of 4G modemm in IoT projects from zero to one. As long as you understand its basic principles, deployment steps, and configuration methods, and pay attention to relevant matters and security measures, you can easily get started and apply it in practical projects. I hope this article can help those who are new to the IoT industry better understand and master the application knowledge of 4G modemm, laying a solid foundation for future IoT practices.