Real-Time Ethernet for Automation Applications - Networked Embedded Systems - page 531

TABLE . Structure of IEC 
IEC - Introduction
IEC --x PhL: Physical Layer
IEC --x DLL: Data Link Layer Service
IEC --x DLL: Data Link Layer Protocols
IEC --x AL: Application Layer Services
IEC --x AL: Application Layers Protocol
IEC - Network Management
Note: x indicates the related CPF.

TABLE . Standards Related with Profiles
IEC - Profile sets for continuous and discrete manufacturing relative to fieldbus use in industrial control systems
IEC - Additional profiles for ISO/IEC - based communication networks in RT applications
IEC --x Profiles for functional safe communications in industrial networks
IEC --x Profiles for secure communications in industrial networks
IEC --x Installation profiles for communication networks in industrial control systems
Note: x indicates the related CPF.

TABLE . List of CPF

Foundation R Fieldbus

CPF

ControlNet TM CPF

CPF PROFIBUS

P-NET ◯

R

CPF

WorldFIP ◯

R

CPF

INTERBUS ◯

R

CPF

CPF SwiftNet

CPF CC-Link

CPF HART

CPF Vnet/IP

CPF TCnet

CPF EtherCAT

CPF EPL

CPF EPA

CPF Modbus

CPF SERCOS

CPF is free to define a set of communication profiles (CPs). he complete set of CP and the related
types are listed in Table ..
Additional profiles listed in Table . cover functional safe communications, secure commu-
nications, and installation profiles for communication networks. These profiles are also separated
according the same CPF, but are not discussed any further in this chapter.

21.3 Real-Time Requirements

Users of an RTE network have different requirements for different applications. hese requirements
are defined in [] as performance indicators. A list of performance indicators defines the require-
ments for a class of applications. Every performance indicator has its limits or ranges and there exists
interdependence between these performance indicators. Every CP has to define which performance
indicators it fulfills in what conditions.

21.3.1 User-Application Requirements
Users of an RTE network have different requirements for different applications. One possible
classification structure could be based on the delivery time:

• A low-speed class, i.e., the first class, for human control with delivery times around
 ms. his timing requirement is typical for the case of humans involved in the system
observation ( pictures/s can already be seen as a low-quality movie), for engineering,