The upgrading of intelligent manufacturing is imminent, and the hardware and software of industrial control system is the top priority. At present, the manufacturing industry is moving from the industry 3.0 represented by automation to the industry 4.0 represented by intelligence. With the aging population and rising labor costs, in order to maintain the pillar status of China’s manufacturing industry, the upgrading of intelligent manufacturing is an inevitable direction. The industrial control system software and hardware represented by PLC, DCS and SCADA are the core of the transformation of the manufacturing industry. Although foreign manufacturers still occupy a large market share, domestic substitution has begun. National and local intelligent manufacturing policies have been introduced continuously to promote the transformation and upgrading of industrial Internet and intelligent manufacturing.

The industrial control system is mainly composed of PLC, DCS and SCADA. PLC is an important foundation of industrial control system. PLC, DCS and SCADA systems have a trend of integration. The industrial control system covers SCADA, DCS and PLC. PLC is usually used in SCADA and DCS systems as an important bottom control component to realize the specific operation and process control of industrial equipment. While SCADA focuses on the data monitoring of each subsystem, DCS is mainly used in the process industry, focusing on decentralized control, and also has the function of SCADA. At the same time, with the progress of industrial control automation technology, the three are showing a trend of integration and integration.

Foreign capital plays a leading role in China’s industrial control system market, and there is much room for domestic substitution. In 2020, the scale of China’s PLC hardware market will be about 11.2 billion yuan, and the foreign capital market in China’s PLC market will account for nearly 90%, mainly Siemens and Rockwell of European and American systems, as well as Mitsubishi and Omron of Japanese systems. At present, local brands mainly provide small PLC products. Large and medium-sized PLCs are basically monopolized by foreign countries. There is a huge space for domestic PLCs to replace them. In 2019, the domestic scale of DCS market was 8.74 billion yuan. Local brands were dominated by Central Control Technology and Hollysys, while foreign brands were dominated by Emerson, Honeywell and Siemens. The market share was gradually being replaced by domestic manufacturers such as Central Control Technology. In 2020, the scale of China’s SCADA market will be about 12.4 billion. At present, domestic brands account for more than 60%. Foreign brands are mainly Emerson, ABB, Honeywell, etc. However, as most SCADA systems are self supplied by enterprises in the power and oil systems, the market concentration is relatively low.