Abstract: This paper introduces the Profibus-DP bus technology and its features, and designs a servo control system based on the Profibus-DP bus, consisting of a servo controller, an S7-300 PLC, and ProTool. This system features simple structure, convenient control, and easy maintenance. The communication process between the servo controller and the PLC, as well as the software design, are also described.
Keywords: Fieldbus; Profibus-DP; PLC; Servo Controller
PROFIBUS is an international, open, manufacturer-independent fieldbus standard widely used in industrial automation. Based on application characteristics, PROFIBUS provides high-speed communication, meeting the fast response time requirements of AC/DC speed control systems. Due to its high reliability, high performance, good real-time performance, and unique design, it has been accepted by almost all manufacturers and users.
Servo motors, with their compact structure, ease of control, smooth operation, and fast response, have become an increasingly important force in motion control for modern industrial automation. They are particularly prevalent in applications requiring high levels of automation and precise control of speed, position, and torque, such as textile machinery, printing machinery, papermaking machinery, CNC machine tools, and industrial robots. Although PROFIBUS-DP was not specifically developed for motion control like MACRO or FireWire, it plays a crucial role in the practical control of servos via the PROFIBUS bus.
Details: Profibus-DP bus technology and its application in servo drives
