Glossary - Siemens SIMATIC ET 200AL System Manual

Glossary

API
API (Application Process Identifier) is a parameter, the value of which specifies the IO data
processing process (application).
The PROFINET standard IEC 61158 assigns profiles to specific APIs (PROFIdrive,
PROFIsave), which are defined by the PROFINET user organization.
The standard API is 0.
Application
An application is a program that runs directly on the MS-DOS/Windows operating system. An
application on the PG is STEP 7, for example.
AR
AR (Application Relation) is an addressing level for diagnostics data records.
Asset
An asset is a component of a machine or plant This can be either hardware or
software/firmware.
Automation system
Programmable logic controller for the open-loop and closed-loop control of process chains of
the process engineering industry and manufacturing technology. The automation system
consists of different components and integrated system functions according to the
automation task.
Backplane bus
The backplane bus is a serial data bus for module intercommunication and the distribution of
the necessary power to the modules. Bus connectors interconnect the modules.
Bus
A bus is a transfer medium that interconnects several devices. Data transmission can be
performed electrically or via optical fibers, either in series or in parallel.
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PROFINET with STEP 7 V15
Function Manual, 12/2017, A5E03444486-AH