Industrial control networks and ordinary data networks are two different types of network systems, which have significant differences in design, function, application and performance. In this paper, we will introduce the differences between industrial control networks and ordinary data networks in detail, including their definitions, characteristics, application scenarios, technical requirements and development trends.
1.Definition
Industrial control network is a network system specially designed for industrial automation and control system, which is mainly used to realize communication and data exchange between devices for monitoring, control and management of production process. Industrial control networks usually adopt real-time and reliable communication protocols to meet the high requirements for real-time and reliability in industrial production processes.
Ordinary data networks are network systems used for everyday office, entertainment and communication scenarios, such as corporate intranets and the Internet. Ordinary data networks usually utilize non-real-time, non-reliable communication protocols to meet users' needs for network speed, flexibility, and cost-effectiveness.
2. Characteristics
Industrial control networks and ordinary data networks differ in the following characteristics:
2.1 Real-time
Industrial control networks require a high degree of real-time to ensure the continuity and stability of the production process. Industrial control networks usually use real-time communication protocols, such as PROFIBUS, Modbus, etc. These protocols can ensure the real-time and reliability of data transmission.
Ordinary data networks have relatively low requirements for real-time, and users can usually accept a certain degree of delay. The communication protocols used in ordinary data networks, such as TCP/IP, can ensure the reliability of data transmission, but the real-time performance is relatively poor.
2.2 Reliability
Industrial control networks require a very high degree of reliability, because any communication failure may lead to production interruption or equipment damage. Industrial control networks usually use redundant design, fault detection and recovery mechanisms and other technical means to improve the reliability of the system.
Ordinary data networks have relatively low reliability requirements, and users can usually accept a certain degree of data loss or error. Ordinary data networks usually adopt error detection and correction mechanisms, such as the retransmission mechanism of TCP, to ensure the reliability of data transmission.
2.3 Security
Industrial control networks require very high security because data leakage or tampering in the production process may lead to serious production accidents or economic losses. Industrial control networks usually adopt strict security measures, such as access control, data encryption and security auditing, to protect the security of data.
Ordinary data networks have relatively low security requirements, and users can usually accept a certain degree of data leakage or tampering. Ordinary data networks usually use basic security measures, such as firewalls and antivirus software, to prevent malicious attacks and virus infections.
2.4 Scalability
Industrial control networks usually have good scalability because equipment may need to be added or replaced during the production process. Industrial control networks use modular design and standardized interfaces to facilitate the addition and replacement of equipment.
General data networks are relatively less scalable because users do not usually add or replace equipment frequently. Common data networks use a centralized design and proprietary interfaces to reduce costs and simplify management.
3.Application Scenarios
Industrial control networks are mainly used in industrial automation and control systems, such as production line monitoring, equipment control, data acquisition and analysis, and other scenarios. Industrial control networks are usually deployed in factories, mines, power stations and other industrial locations.
Ordinary data networks are mainly applied to daily office, entertainment and communication scenarios, such as corporate intranet, Internet, e-mail, and online games. Ordinary data networks are usually deployed in offices, homes, schools, and other places.
4.Technical Requirements
Industrial control networks and ordinary data networks have the following differences in technical requirements:
4.1 Communication Protocol
Industrial control networks usually adopt real-time and reliable communication protocols, such as PROFIBUS, Modbus, EtherCAT, etc. These protocols can ensure real-time and reliable data transmission.
Ordinary data networks usually use non-real-time, non-reliable communication protocols, such as TCP/IP, HTTP, FTP, etc. These protocols can meet the user's needs for network speed, flexibility and cost-effectiveness.
4.2 Device Performance
Industrial control networks have very high requirements for equipment performance because equipment failures in the production process can lead to serious production accidents or economic losses. Industrial control networks usually use high-performance and high-reliability devices, such as PLCs, DCSs, RTUs, and so on.
Ordinary data networks have relatively low requirements for equipment performance, and users can usually accept a certain degree of equipment failure. Ordinary data networks usually use low-cost, highly flexible devices, such as routers, switches, servers and so on.
4.3 Network Architecture
Industrial control networks usually adopt a distributed architecture to realize close access to devices and fast data transmission. Industrial control networks use modular design and standardized interfaces to facilitate the addition and replacement of equipment.
General data networks are typically centralized to simplify management and reduce costs. General data networks use proprietary interfaces and customized designs to meet the needs of specific scenarios.
5.Trends
With the development of Industry 4.0 and smart manufacturing, industrial control networks are moving toward greater intelligence, integration, and networking. Future industrial control networks will focus more on real-time data, reliability and security to meet the needs of smart manufacturing and industrial internet.
General data networks are also developing in the direction of greater speed, flexibility and security. With the development of technologies such as 5G, IoT and cloud computing, general data networks will focus more on network speed, flexibility and cost-effectiveness to meet users' needs for network services.