Siemens S7-1500 Function Manual page 24

Display of the memory utilization on the display of the CPU
To obtain information about the available memory via the display, proceed as follows:
● Select the "Diagnostics" menu on the display with the help of the arrow keys.
● Select the "Used memory" command from the "Diagnostics" menu.
Under the "Used memory" menu item, you can find information about the utilization of the
various memory areas (see following figure). Note that the memory usage is a snapshot of
the memory used at the time of the request and is not continuously updated.
To find out details about the respective memory areas (e.g. code work memory), select the
required memory area with the help of the arrow keys (see following figure).
In the detail view, e.g. of the code work memory, the display provides you with the following
information:
● Memory space which is still available in the code work memory.
● Memory space which is already allocated in the code work memory.
● Total available memory space in the code work memory.
Structure and Use of the CPU Memory
Function Manual, 10/2018, A5E03461664-AC
Memory areas and retentive memory
2.2 Memory requirements and memory usage
23