Memory Usage And Application Examples; Memory Usage For Recipes - Siemens S7-1500 Function Manual

Memory usage and application examples

3.1

Memory usage for recipes

Introduction
A recipe is a collection of parameter sets with the same structure. These recipe data records
are located in a non-runtime-relevant data block in the load memory, and do not occupy any
storage space in the work memory. You have the option of reading individual recipe data
records into a data block in the work memory and accessing the data in the user program.
You can write a recipe data record that has been changed in the user program back to the
recipe data block.
For example, recipes contain the related data of a particular batch in production. You can
export recipe data records of a recipe DB as a csv file. A web browser can read data via the
web server of the CPU, even when the CPU is in STOP state. You can also directly access
the data of the SIMATIC memory card using a card reader on the programming device.
Note
Redundant S7-1500R/H system
Recipes are not supported by the CPUs of the redundant system S7-1500R/H.
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Structure and Use of the CPU Memory
Function Manual, 10/2018, A5E03461664-AC
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