The design of fault-tolerant structure of object controllers for electric centralization in rail transport is discussed in the paper. It is proposed to implement the principle of hierarchical ensure a secure environment. Network connection of object controllers is implemented based on highly reliable industrial network CAN. Signature analysis is used for testing components of object controllers. The statistical model confirms the length of the test. A genetic programming algorithm is used for the synthesis of the test. The project was tested in an experimental system of centralization of power in the North-Caucasian railway stations.