Glossary
S7-1500R/H redundant system
516 System Manual, 01/2024, A5E41814787-AF
TIA Portal
Totally Integrated Automation Portal
The TIA Portal is the key to the full performance capability of Totally Integrated Automation.
The software optimizes operating, machine and process sequences.
Time-delay interrupt
You can find more information in the "Interrupt, time-delay" glossary entry.
Time-of-day interrupt
You can find more information in the "Interrupt, time-of-day" glossary entry.
Timer
Timers are components of the system memory of the CPU. The operating system
automatically updates the content of the "timer cells" asynchronously to the user program.
STEP 7 instructions define the precise function of the timer cell (for example on-delay) and
trigger its execution.
Update interrupt
You can find more information in the "Interrupt, update" glossary entry.
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 can find more information in the "Firmware of the CPU" glossary entry.
Warm restart
You can find more information in the "Restart" glossary entry.