1. A method for controlling a simulation being performed by a simulation system, said simulation regarding an operation of a Fieldbus system comprising at least one Fieldbus Interface Module (FIM) communicatively coupled to a plurality of field devices, comprising the steps of: initiating a current simulation of at least a portion of said operation of said Fieldbus system, said current simulation including a plurality of sequential steps involving said FIM, comprising; obtaining intermediate simulation information indicating a progress of said current simulation, said progress defining which steps of said plurality of sequential steps have been performed, are being performed, and are to be performed; communicating at least a portion of said intermediate simulation information to at least one user of said simulation system; and controlling said progress of said current simulation using at least one visual element of a computer display.