Testing the Distributed Systems for the Harsh Environment

− This paper is focused on comparison of three proposed methods for testing the modules and the complex installations of distributed systems (fieldbuses) for the use in a harsh industrial environment and applications, where the system reliability is a crucial requirement. The methods are defined, their advantages and disadvantages are explained and expected test results are presented. Special auxiliary test equipment required for testing is described, especially in terms of its necessary features. Both the test methods are intended for the equipment manufacturers, system integrators and possibly users of distributed systems. The Controller Area Network (CAN) standard is used as an application example, but most of the results are commonly valid.