OPC
In the past, OPC was a collection of software interfaces for data exchange between PC
applications and process devices. These software interfaces were defined according to the rules
of Microsoft COM (Component Object Model) and can therefore be easily integrated on
Microsoft operating systems. COM or DCOM (Distributed COM) provides the functionality of
interprocess communication and organizes information exchange between applications,
including across computer boundaries (DCOM).
OPC client
An OPC client (COM client) can therefore exchange information with an OPC server (COM server)
using mechanisms of the Microsoft operating system.
OPC server
The OPC server provides process information of a device at its interface. The OPC client connect
to the server and can access the data offered.
OPC UA
To resolve the restrictions in practice and to meet the additional requirements, the OPC
Foundation has defined a new platform with the name OPC Unified Architecture, which provides
a standardized basis for exchanging information between components and systems. OPC UA will
also be available as an IEC 62541 standard and will thus form the basis for other international
standards.
Parameterization
Parameterization is the definition of parameters using the parameterization software.
PII/PIQ
Process image input/process image output
PROFIenergy
PROFIenergy is a profile for energy management in production plants and is based on the
PROFINET communication protocol. PROFIenergy controls the power consumption of
automation equipment used in production via a PROFINET network.
PROFINET
PROFINET (Process Field Network) is the open Industrial Ethernet standard of Profibus & Profinet
International (PI) for automation.
Glossary
SIRIUS 3RW5 PROFINET communication modules
208
Equipment Manual, 05/2021, A5E35631297002A/RS-AD/004
