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In the case of the same function and the same I/O point data, the overall price is lower than the modular price. However, the modular type has the advantages of flexible function expansion, convenient maintenance (module replacement), and easy fault diagnosis. The PLC structure should be selected according to the actual needs. General Electric Company designed the processor/controller of IS220UCSAH1AMark VIe system.

The wireless data operation network supported by 4G/5G technology provides a reliable data channel for industrial data transmission. With its wireless access, Internet connection and high data transmission rate, it has been able to realize remote data transmission in the industrial field and complete the networking of industrial remote control. At present, in China, 4G/5G technology is used to provide voice and data services for its users. With the development of wireless communication technology, 4G/5G products are more and more widely used in the field of data transmission, especially the emergence of 4G/5G communication modules, which accelerates the development of this application. Beijing Dongyong Technology has developed ORB305 series products based on TCP/IP network and 4G/5G network for industrial users based on years of experience in the field of wireless technology and the characteristics and needs of today's industrial field. ORB305 series products are characterized by wide temperature operation, wide voltage power supply, high reliability, good adaptability to industrial environment, easy installation, easy maintenance, etc. It can provide customers with high-speed, always online, transparent data transmission, fully meet the needs of industrial data acquisition, transmission and monitoring, and can be widely used in the industrial automation industry. 2、 Scheme design basis

2.1 Safety and reliability

Considering that the industrial automation control system has certain special requirements for data, the safety of data shall be fully considered in the design of the whole system, and the reliability of equipment shall be emphatically measured in the selection of equipment to ensure the safe and reliable operation of the whole system.

2.2 progressiveness and practicability of Technology

While ensuring the application of industrial users, it also reflects the progressiveness of the wireless network system. In the network design, we should combine the advanced technology with the existing mature technology and standards, and fully consider the current situation and future development trend of wireless network applications.

2.3 Flexibility and Scalability

According to the needs and changes of future applications of industrial users, it shall have sufficient access capability and scalability, including the provision of multiple access modes and the scalability of access, the expansion of bandwidth and the smooth upgrade of rate, and the scalability of processing capability, so as to minimize the adjustment of network architecture and existing equipment.

2.4 Manageability

Considering the decentralized distribution of industrial users' lower devices and the difficulty of maintenance, the scheme adopts a centralized management network architecture to monitor the running status of the devices in real time, and the lower computers can be remotely set through the monitoring center.

2.5 Compatibility and Economy

Compatibility, which can maximize the availability and continuity of various computer software and hardware resources in the network; Economical. Under the condition of making full use of existing resources, the overall investment in the network system is minimized. It shall be implemented in a planned and step-by-step manner. Under the premise of ensuring the overall performance of the network, the existing network equipment shall be fully utilized or necessary upgrades shall be made.