The slave controller is a fundamental component for realizing bus communication， field sensor acquisition， motor， and other actuator control functions in the industrial automation control system. To meet the needs of various industrial field actuators and sensors and to solve the problems of the cumbersome hardware and software design， low development efficiency， and difficult upgrading and transplantation of slave controllers， this paper proposes a model development method for slave controllers that involves analyzing the hardware and software components of typical slave controllers. The common real-time Ethernet communication processing model of slave controllers and the device control models of digital input/output （I/O）， analog I/O， motion control， and communication interface conversion slaves in practical applications are established， and the model code is automatically generated and ported to realize the standardized and rapid development of slave controller software on the domestic hardware platform. The experimental results verify the effectiveness of the proposed model development method. This study provides a new method for the rapid development and upgrading of the localized slave controller software.