Nowadays, model-driven formal verification approaches are much researched for testing industrial control applications. However, these approaches can't check the system for bus errors, faulty hardware configurations and compatibility problems efficient. For sufficient testing, Hardware-in-the-Loop (HIL) test should be used. But the HIL-test is rarely used in the field of automation because of missing experience with it and great costs by using vendor-dependent solutions. This paper will discusses the current problems of HIL-tests for verifying the control applications and presents a promising vendor-independent approach for its implementation