Understand the basic principles and architecture of DCS (Distributed Control System): Understand the three-layer structure of DCS system: management level, monitoring level, and process control level. Master the communication methods between different layers and understand how data flows between them. Master the hardware composition of abb800xa DCS system: Familiar with hardware components such as on-site control stations, operation stations, engineer stations, process networks, etc. Understand the role of these hardware components in the system and how they work together to achieve automated control. Learn the software composition of abb800xa DCS system: Understand its components such as operating system, application software, configuration software, etc. Master how these software support system operation and management, including how to perform system configuration, monitoring, control, and other operations. Understand the functions of the abb800xa DCS system: Master core functions such as configuration design, communication, real-time control, and operation monitoring. Understand