Time to time, customers ask us in which kind of memory is stored the program of a PLC, its retained variables, its real-time clock data (RTC),…

We would like to use this blog entry in order to summarize in a single place all this kind of information but not only for our PLC but also for our HMI.

Here you have a table summarizing all this information:

PLC HMI program-retained data-RTC

Hope it can be helpful for you!