  The Networked Control Systems (NCS) are complex systems which integrate
information provided by several domians such as automatic control, computer
science, communication network. The work presented in this paper concerns fault
detection, isolation and compensation of communication network. The proposed
method is based on the classical approach of Fault Detection and Isolation and
Fault Tolerant Control (FDI/FTC) currently used in diagnosis. The modelling of
the network to be supervised is based on both couloured petri nets and network
calculus theory often used to represent and analyse the network behaviour. The
goal is to implement inside network devices algorithms enabling to detect,
isolate and compensate communication faults in an autonomous way.
