Siemens Simatic S7-1500R System Manual page 323

Glossary
User program
In SIMATIC, a distinction is made between user programs and the firmware of the CPU.
The user program contains all instructions, declarations and data that control a system or
process. The user program is assigned to the redundant system. Structuring into smaller unit
is supported.
Firmware: You will find further information in the glossary entry "Firmware of the CPU".
Value status
The value status describes a specific signal state. The value status is constantly updated
and cyclically transmitted by the field device as a quality statement together with the
measured value.
Warm restart
You will find further information in the glossary entry "Restart".
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S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA