The paper shows the possibility of creating a modern control system linking an industrial computer, a CNC device, a programmable controller, digital and analog measuring instruments into a single information space, which ensures the production of a welded joint with a required structure and properties. A principle is proposed for creating a single digital platform combining the fields of design and numerical calculations based on an object-oriented approach that provides support for system engineering processes, starting with conceptual design and up to the later stages of the system lifecycle. Integration of technological, design, calculation and operational processes based on CASE technology allows you to automate the development process as much as possible ensuring the absence of errors and ease of software products maintenance. Microprocessor devices and local area networks provide an opportunity to create integrated technological data processing systems.