Memory Areas And Retentive Memory; Memory Areas - Siemens S7-1500 Function Manual

Memory areas and retentive memory

2.1

Memory areas

The automation data is located in the automation system in different memory areas.
The offline data of the project created in STEP 7 is located on the hard disk of the
programming device. The online data of the project is located in the load memory on the
SIMATIC memory card. In addition, the work memory, retentive memory and other memory
areas are located on the CPU.
The following figure shows an overview of the memory areas of the CPUs:
Figure 2-1
Structure and Use of the CPU Memory
Function Manual, 10/2018, A5E03461664-AC
Memory areas
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