What is this error about. "The sample time after propagation is [0, 0]. Enter a discrete sample time in 'PI/Integrator'" ?

08 August 2015 0 9K Report

When i tried to simulate a system and tried to tune using Tuning option(Discrete) in PID controller block it showed this error. and when i tried in continuous mode it showed "sampling times must agree" I can send the model if you can give ur mail id. Thanks alot in advance!

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