Networked Control Systems are a special kind of
control loops in which the main feedback is closed through a
shared communication link. A number of undesirable influences
appear when the link to communicate controller and plant is not
always available. The aim of this paper is to analyze one of the
drawbacks of these systems, irregular conversions that appear
when different sampling periods are used in emitter, medium
and receiver of the communication. A simulation model is
developed to study this irregular conversions and to be
employed on the design of control strategies.