The testing approach of embedded real-time automatic control software based on control objects

According to testing embedded real-time software (ERTS) of programmable logic controller (PLC), the paper summarizes the present researches of PLC ERTS’ test. It analyses concretely the technologies including static test or verification, testing in real environment and simulation environment, and testing by hardware checker or code instrumentation. An agent-oriented software testing model is presented for solving the existing problems of these methods in testing PLC ERTS. The architecture of the model is introduced from structure, frame and work pattern. Based on the model the automatic test of PLC ERTS can be realized in simulation environment.