What function does the memory serve during the shutdown of a CPS node?

During the shutdown of a Cyber-Physical System (CPS) node, the memory primarily serves the function of data retention. This ensures that critical information and state data are preserved even when the system is powered down. In a CPS environment, maintaining data integrity during shutdown is crucial for various reasons, such as allowing the system to resume operations without loss of information when powered back on, supporting data analysis processes, or ensuring system safety and performance.

While power saving modes can help reduce energy consumption during inactivity, they typically do not apply during a full shutdown, where the focus is on retaining data rather than minimizing energy use. Intermediate storage usually refers to temporary data holding during active processes rather than during shutdown scenarios. Therefore, the main purpose of memory in this context is to maintain the information necessary for the CPS node to function effectively upon reactivation.