Siemens SIMATIC S7-1500 System Manual page 265

System power supply
Consists of the integrated system power supply of the CPU/interface module and additional
power supplies (PS), if necessary. The system power supply serves exclusively to supply the
I/O modules via the backplane bus.
Technology object
A technology object supports you in the configuration and commissioning of a technological
function.
The properties of real objects are represented by technology objects in the controller. Real
objects can be, for example, controlled systems and drives.
The technology object contains all data of the real object required for its open-loop or closed-
loop control, and it signals back status information.
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
see "Interrupt, time-delay"
Time-of-day interrupt
see "Interrupt, time-of-day"
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 (e.g. on-delay) and trigger its
execution (e.g. start).
Update interrupt
see "Interrupt, update"
User program
SIMATIC differentiates between the operating system of the CPU and user programs. The
user program contains all instructions and declarations as well as data for the signal
processing that enable a plant or process to be controlled. The user program is assigned to
a programmable module (e.g. CPU) and can be structured in smaller units.
Warm restart
See "Restart"
Automation system
System Manual, 09/2016, A5E03461182-AD
Glossary
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