Process control configuration system for use with a Profibus device network

A method of configuring a process control system including a controller, a first device network that uses a first communication protocol and a Profibus device network which has a Profibus device connected to a Profibus I/O card and which uses a Profibus communication protocol, the method including the steps of: ```creating a device definition 74 associated with the Profibus device for storage in a configuration database 72, said device definition including information pertaining to a signal associated with the Profibus device; ```using a configuration documentation system 78 to associate an indication of the Profibus device with a port of a Profibus I/O card to reflect the actual connection of the Profibus device to the process control system; ```assigning a signal tag for the signal associated with the Profibus device as connected within the process control system; ```downloading a configuration of the port of the Profibus I/O card to the Profibus I/O card; and ```configuring a control application to be run in the controller to use the signal by specifying the signal tag to be used by the control application.