Concepts and Application Scenarios of 4G Cellular Modem and Modbus

In the field of Industrial Internet of Things (IIoT) and automation, 4G cellular modem and Modbus protocol are two core concepts. Together, they provide an efficient and reliable method for communication and data transfer between devices. This article explores the concepts, features, and uses of 4G cellular modem and Modbus in various application scenarios.

CONCEPT AND APPLICATION SCENARIOS OF 4G CELLULAR MODEM

1.4g cellular modem concept

4G cellular modem is a kind of equipment used for remote data communication. It is typically deployed between the monitoring site and the network, be responsible for transmitting data from field devices to remote server or data center through network. The 4G cellular modem supports multiple communication protocols, such as TCP/IP, UDP, HTTP, etc. It can connect and exchange data with a variety of sensors, PLC (programmable logic controller) and other industrial equipment.

2. Application scenarios of 2.4g cellular modem

4G cellular modems are widely used in the following scenarios:

· Remote monitoring and control system: real-time monitoring and control of remote equipment can be realized through 4G cellular modem. Such as pumps, valves, motors and so on.

· Energy management system: 4G cellular modem is used to collect and analyze energy data in the fields of electric power, water conservancy and petroleum. Improve energy efficiency.

· Intelligent transportation system: 4G cellular modem can be used for data collection and transmission of traffic lights, buses, taxis and other vehicles.

CONCEPT AND APPLICATION SCENARIO OF MODBUS

1. Modbus concept

Modbus is a serial communication protocol, which is widely used in industrial automation. It defines a data model for communication between devices, including data formats, transmission rules, and device behaviors. Modbus protocol has been widely used because of its simplicity, reliability and openness.

Modbus protocol supports a variety of transmission methods, such as RS-232, RS-485, TCP/IP, and can communicate with a variety of devices. It defines two communication modes: Modbus RTU (serial communication) and Modbus TCP (Ethernet communication).

2. Modbus application scenarios

The Modbus protocol is widely used in the following scenarios:

· Communication between PLC and HMI: PLC communicates with HMI through Modbus protocol to realize display and operation of equipment status.

· Sensor and data acquisition system: The sensor transmits data to the data acquisition system through the Modbus protocol. Realize real-time monitoring and analysis of data.

· Intelligent building and industrial automation system: Modbus protocol is widely used in intelligent building and industrial automation system. It is used to realize the communication and control between devices.

COMBINED APPLICATION OF 4G CELLULAR MODEM AND MODBUS

In practice, 4G cellular modem and Modbus are often used together.The 4G cellular modem, as a data communication device, is responsible for transmitting the data of the field device to a remote server; The Modbus protocol defines the communication rules between field devices. Through the combination of 4G cellular modem and Modbus, efficient and reliable communication and data transmission of remote devices can be realized.

For example, in a remote monitoring and control system, the 4G cellular modem communicates with the PLC via the Modbus protocol. Collect the real-time data of PLC and transmit to the remote server. The remote server analyzes and processes the data to realize the real-time monitoring and control of the field equipment.

4G cellular modem and Modbus play an important role in industrial IoT and automation. The 4G cellular modem provides an efficient and reliable data communication mode for remote devices; The Modbus protocol defines the rules and standards for communication between devices. Through the combination of 4G cellular modem and Modbus, efficient and reliable communication and data transmission of remote equipment can be realized. Provide strong support for the development of industrial automation and intelligence.