In a fog-based SCADA system, where is the PC that runs the SCADA software typically located?

In a fog-based SCADA system, the PC that runs the SCADA software is typically located on-site. This proximity to the operational environment allows for lower latency and more reliable data processing and control compared to options that rely on remote data processing.

On-site PCs can directly interface with local sensors and actuators, enabling real-time monitoring and decision-making without the delays that might arise from sending data to a cloud or remote server. Furthermore, having a PC on-site enhances data security and operational autonomy, as it reduces dependence on external systems for critical control functions.

Fog computing enhances this by extending cloud capabilities to the edge of the network, allowing for distributed computing closer to where data is generated. This architecture is particularly beneficial in industrial applications, where rapid response times are crucial for maintaining operational effectiveness and safety.