IEC61850 is a recent standard in substation automation system (SAS) aiming mainly at interoperability. Interoperability is achieved by standardizing communications and data between intelligent electronic devices (IEDs). Data inintelligent electronic devices are modelled in IEC61850 using an object orientated approach as logical nodes. Although the IEC61850 standardizes the data and communication in substation design, the implementation of control is intentionally left out of the standard. IEC61499 function blocks has been proposed tofill the logic void of the IEC61850 standard. In this paper, intelligent logical node (iLN) architecture is used, which combines both description and control within IEC61850 logical nodes. An IEC61850 application presented at the IEC TC57WG10 has been modelled using the iLN architecture with the addition of editable logics within the iLN architecture by means of IEC61499 function blocks implemented in the ISaGRAF development platform.