The sf light of Siemens 3 15cpu is red, and the hardware diagnosis shows it. What should I do? The newcomer is in urgent need of a solution. Express gratitude

1, that's a system problem. Check whether your I/O port is wired and whether there are any faults in the input and output. At the same time, see if the input and output points of your equipment are consistent with the input and output points assigned in your hardware configuration. At the same time, see if your DP bus is wrong, such as DP address, master station address and DP transmission rate.

2. Siemens

Siemens' business in China is the main pillar of Siemens Group's business in the Asia-Pacific region and plays an increasingly important role in Siemens' global business. All business groups of Siemens have entered China and are active in the fields of information and communication, automation and control, electric power, transportation, medical care, lighting and household appliances in China. The core business areas are infrastructure construction and industrial solutions.

Siemens is an inseparable part of China's economy and is committed to becoming a reliable partner for China to complete major infrastructure construction and industrial modernization. At present, some of the most advanced technologies being used in China come from Siemens. Siemens technology can provide economic, efficient and environmentally friendly energy for China. A fast, safe and comfortable public transport system; Reliable, high-speed and low-cost communication; And medical equipment for rapid, accurate and effective diagnosis and treatment, as well as automation solutions to help various industrial fields improve production, efficiency and competitiveness.

3. The industrial value of Siemens

As one of the leading suppliers in the world, Siemens industrial business field provides innovative and environmentally friendly products and solutions for industrial customers. With complete automation technology and industrial software, solid industry market expertise and technology-based services, industrial business areas help customers improve productivity, efficiency and flexibility. Siemens industrial business field can provide unique automation technology, industrial control and drive technology and industrial software in the world, which can meet all the needs of production enterprises and cover the whole value chain-from product design and development to product production, sales and service. At the same time, it can also provide specialized comprehensive customized services for customers' unique markets and needs to maximize customers' interests. By adopting advanced software and automation technology, the time to market of products can be shortened by up to 50%, and the energy and sewage treatment costs of production enterprises can be greatly reduced. Therefore, with its energy-saving products and solutions, Siemens' industrial business field can greatly improve customers' market competitiveness and make important contributions to environmental protection.