In power grids, Supervisory Control and Data Acquisition (SCADA) systems are essential to collect data from the various network elements, including electrical measurements and equipment status, among others. In recent decades, power grids have become increasingly complex. The so-called microgrids, i.e., parts of the grid close to end users that contain local generation and/or storage, are being installed. These systems can operate independently from the grid or remain grid-connected. Geographically concentrated microgrids interconnect diverse energy resources, like photovoltaic panels, batteries, and diesel generators, while adopting new technologies for continuous evolution. This paper proposes a design for adapting SCADA systems to microgrids, with a focus on achieving flexibility and scalability within small and heterogeneous networks of Intelligent Electronic Devices (IEDs), the so-called MicroSCADA. The proposed design structure is shown, outlining the key components required for system-agnostic implementations. Finally, the design is tested and validated in an experimental setup, with a set of virtualized IEDs. It shows a promising scheme for a real industrial application, independent of the type of IED.