Siemens SINUMERIK 840D sl Function Manual page 806

S7: Memory configuration
15.5 Configuration of the dynamic user memory
The figure below shows the principle division of the dynamic NC memory:
Figure 15-2
Dynamic-user-memory size
The size of the dynamic user memory is displayed in machine data:
MD18210 $MN_MM_USER_MEM_DYNAMIC
Free user memory
The user memory still available is shown in the machine data:
MD18050 $MN_INFO_FREE_MEM_DYNAMIC
806
Dynamic NC memory
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Extended Functions