Overview and guidance for PROFINET specifications
This guideline presents an overview and guidance for the PROFINET documents. It
• explains the structure and content of the PROFINET specifications;
• relates the structure of the PROFINET specifications to the ISO/IEC 7498 OSI Basic Reference Model;
• shows how to use parts of the PROFINET specifications in combination with IEC 61784-1 and IEC 61784-2;
• shows the logical structure of IEC 61784-1, IEC 61784-2, and IEC 61784-5;
• provides explanations of some aspects of the PROFINET specifications that are common to many of the parts of IEC 61158-4, and, separately, to many of the parts of IEC 61158-5.
Order No.: 2.702
Application layer services for decentralized periphery
This specification provides the PROFINET Application layer service definition for the Communication Profiles (CPs) of PROFINET (Type 10). This specification will be forwarded to IEC committee SC65C MT9 to build IEC 61158-5-10.
This standard is one of a series produced to facilitate the interconnection of automation system components. It is related to other standards in the set as defined by the “three-layer” fieldbus reference model described in IEC/TR 61158-1.
The application service is provided by the application protocol making use of the services available from the data-link or other immediately lower layer. This standard defines the application service characteristics that fieldbus applications and/or system management may exploit.
Throughout the set of fieldbus standards, the term “service” refers to the abstract capability provided by one layer of the OSI Basic Reference Model to the layer immediately above. Thus, the application layer service defined in this standard is a conceptual architectural service, independent of administrative and implementation divisions.
Version: 2.3 Ed2MU4
Order No.: 2.712
Application layer protocol for decentralized periphery
This specification provides the PROFINET Application layer protocols for the Communication Profiles (CPs) of PROFINET (Type 10). This specification will be forwarded to IEC committee SC65C MT9 to build IEC 61158-6-10.
This standard is one of a series produced to facilitate the interconnection of automation system components. It is related to other standards in the set as defined by the “three-layer” fieldbus reference model described in
The application protocol provides the application service by making use of the services available from the data-link or other immediately lower layer. The primary aim of this standard is to provide a set of rules for communication expressed in terms of the procedures to be carried out by peer application entities (AEs) at the time of communication. These rules for communication are intended to provide a sound basis for development in order to serve a variety of purposes:
a) as a guide for implementers and designers;
b) for use in the testing and procurement of equipment;
c) as part of an agreement for the admittance of systems into the open systems environment;
d) as a refinement to the understanding of time-critical communications within OSI.
This standard is concerned, in particular, with the communication and interworking of sensors, effectors and other automation devices. By using this standard together with other standards positioned within the OSI or fieldbus reference models, otherwise incompatible systems may work together in any combination.
Version: 2.3 Ed2MU4
Order No.: 2.722
Profiles for decentralized periphery
This specification provides additional communication profiles (CPs) for PROFINET IO to the existing Communication Profile Family (CPF) of PROFIBUS and PROFINET. These CPs will be forwarded to IEC committee SC65C WG11 to build IEC 61784-2.
These profiles meet the industrial automation market objective of identifying Real-Time Ethernet (RTE) communication networks coexisting with ISO/IEC 8802-3 – commonly known as Ethernet. These RTE communication networks use provision from ISO/IEC 8802-3 for the lower communication stack layers and additionally provide more predictable and reliable real-time data transfer and means for support of precise synchronization of automation equipment.
More specifically, these profiles help to correctly state the compliance of RTE communication networks with ISO/IEC 8802-3, and to avoid the spreading of divergent implementations.
Adoption of Ethernet technology for industrial communication between controllers and even for communication with field devices promotes use of Internet technologies in the field area. This availability would be unacceptable if it causes the loss of features required in the field area for industrial communication automation networks, such as:
• synchronized actions between field devices like drives,
• efficient, frequent exchange of very small data records.
These new RTE profiles may take advantage of the improvements of Ethernet networks in terms of transmission bandwidth and network span.
Another implicit but essential requirement is that the typical Ethernet communication capabilities, as used in the office world, are fully retained, so that the software involved remains applicable.
The market is in need of several network solutions, each with different performance characteristics and functional capabilities, matching the diverse application requirements. RTE performance indicators (see clause X5X), which values will be provided with RTE devices based on communication profiles specified in this document, enable the user to match network devices with application dependant performance requirements of an RTE network.
Subclause X5.1X specifies basic principles of performance indicators required to express RTE performance of a CP. Subclause X5.2 describes the view of application requirements. An application- dependant class could be used to find out a suitable CP. Clause 4 specifies how conformance of a device to the CPF or CP should be stated.
Version: 2.3 Ed2MU4
Order No.: 2.742
PROFINET V2.2 is specified in IEC61158-6-10 Ed2.0, IEC61158-5-10 Ed2.0 and IEC61784-2 Ed2.0. The documents can be purchased from the IEC website by using the following link: http://webstore.iec.ch/
This area is for members only. Please login to access this download.