IEC PAS 61158-6-22:2009

FOREWORD
INTRODUCTION
1 Scope
   1.1 General
   1.2 Specifications
   1.3 Conformance
2 Normative references
3 Terms, definitions, abbreviations, symbols and
   conventions
   3.1 Referenced terms and definitions
        3.1.1 ISO/IEC 7498-1 terms
        3.1.2 ISO/IEC 8822 terms
        3.1.3 ISO/IEC 9545 terms
        3.1.4 ISO/IEC 8824 terms
   3.2 Fieldbus application-layer specific definitions
   3.3 Abbreviations and symbols
   3.4 Conventions
        3.4.1 General concept
        3.4.2 Abstract syntax conventions
4 Application layer protocol specification
   4.1 Operating principle
   4.2 Device reference models
        4.2.1 RTFL device reference model
        4.2.2 RTFN device reference model
   4.3 Application Layer structure
5 FAL syntax description
   5.1 Introduction and coding principles
   5.2 Data type encoding
        5.2.1 Overview
        5.2.2 Transfer syntax for bit sequences
        5.2.3 Encoding of a Boolean value
        5.2.4 TimeOfDay
        5.2.5 TimeDifference
        5.2.6 Encoding of floating point values
        5.2.7 Encoding of Integer values
        5.2.8 Encoding of Unsigned Integer values
        5.2.9 Encoding of an OctetString value
        5.2.10 Encoding of a VisibleString value
        5.2.11 Encoding of an UnicodeString value
   5.3 CeS encoding
        5.3.1 Object dictionary
        5.3.2 SDO
        5.3.3 Process data write
        5.3.4 Emergency
        5.3.5 Heartbeat
   5.4 Standard Ethernet frame communication
        5.4.1 Overview
        5.4.2 Send frame request
   5.5 Management encoding
        5.5.1 DLL management services
        5.5.2 Application layer management
6 FAL protocol state machines
   6.1 Overview
   6.2 Fieldbus service protocol machine (FSPM)
   6.3 Application relationship protocol machine (ARPM)
   6.4 DLL mapping protocol machine
7 AP-context state machine
8 FAL service protocol machine (FSPM)
9 Application layer state machine (ALSM)
   9.1 Description
   9.2 States
        9.2.1 Initialization (INIT)
        9.2.2 ResetApplication (ResAP)
        9.2.3 ResetCommunication (ResCO)
        9.2.4 PreOperational (PreOP)
        9.2.5 Operational (OP)
        9.2.6 Stopped (ST)
   9.3 Primitive definitions
        9.3.1 FAL primitives
        9.3.2 Primitives exchanged between DLL and ALSM
        9.3.3 Primitives exchanged between FSPM and ALSM
   9.4 State table
   9.5 AL-service forwarding depending on AL-state
10 DLL mapping protocol machine (DMPM)
   10.1 Overview
   10.2 Primitives exchanged between ALSM and DMPM
   10.3 Primitives exchanged between DLL and DMPM
   10.4 ALSM to DLL mapping

IEC/PAS 61158-6-22:2009(E) provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to Type SNpTYPE fieldbus. It defines in an abstract way the externally visible behavior provided by the different Types of the fieldbus Application Layer in terms of:
- the abstract syntax;
- the transfer syntax;
- the application context state machine and the application relationship state machines.
The purpose of this PAS is to define the protocol provided to:
- define the wire-representation of the service primitives defined in IEC/PAS 61158 5 22;
- and define the externally visible behavior associated with their transfer. It contains an additional profile - SNpTYPE - which may be integrated into a future new edition of the IEC 61158-6 series.