IEC 62056-31:1999

Foreword
1 General
   1.1 Scope
   1.2 Normative references
2 General description
   2.1 Basic vocabulary
   2.2 Layers and protocols
   2.3 Specification language
   2.4 Communication services for local bus data
        exchange without DLMS
        2.4.1 Remote reading exchange
        2.4.2 Remote programming exchange
        2.4.3 Point-to-point remote transfer
               exchange
        2.4.4 Broadcast remote transfer frame
        2.4.5 Bus initialization frame
        2.4.6 Forgotten station call exchange
        2.4.7 Frame fields
        2.4.8 Principle of the energy remote supply
        2.4.9 Non-energized station pre-selection
               exchange
        2.4.10 Communication exchange after
               pre-selection
        2.4.11 Alarm function
   2.5 Communication services for local bus data
        exchange with DLMS
   2.6 Systems management
3 Local bus data exchange without DLMS
   3.1 Physical layer
        3.1.1 Physical-62056-31 protocol
        3.1.2 Physical parameters
        3.1.3 Timing diagrams
        3.1.4 Physical services and service
               primitives
        3.1.5 State transactions
        3.1.6 List and processing of errors
   3.2 Data link layer
        3.2.1 Link-62056-31 protocol
        3.2.2 Management of exchanges
        3.2.3 Data Link services and service
               primitives
        3.2.4 Data Link parameters
        3.2.5 State transitions
        3.2.6 List and processing of errors
   3.3 Application layer
        3.3.1 Application-62056-31 protocol
        3.3.2 Application services and service
               primitives
        3.3.3 Application parameters
        3.3.4 State transitions
        3.3.5 List and processing of errors
4 Local bus data exchange with DLMS
   4.1 Physical layer
   4.2 Data Link layer
        4.2.1 Link-E/D protocol
        4.2.2 Management of exchanges
        4.2.3 Data Link services and service
               primitives
        4.2.4 Data Link parameters
        4.2.5 State transitions
        4.2.6 List and processing of errors
   4.3 Application layer
        4.3.1 Transport sub-layer
        4.3.2 Application sub-layer
5 Local bus data exchange - Hardware
   5.1 General
   5.2 General characteristics
        5.2.1 Signal transmission of 50kHz
        5.2.2 Energy supply signal transmission
        5.2.3 Simple Secondary Station and multiple
               Secondary Station
   5.3 Bus specification
        5.3.1 General characteristics
        5.3.2 Cable characteristics
        5.3.3 Wiring
   5.4 Magnetic plug
        5.4.1 Function
        5.4.2 Common mechanical characteristics
        5.4.3 Electrical Block diagram with simple
               plug
        5.4.4 Electrical Block Diagram with energy
               supply plug
   5.5 Functional specifications of Primary Station
        transmitter (for 50kHz signal)
   5.6 Functional specifications of Primary Station
        receiver (for 50kHz signal)
   5.7 Functional specifications of Secondary Station
        transmitter (for 50kHz signal)
   5.8 Functional specifications of Secondary Station
        receiver (for 50kHz signal)
Annex A (normative) Specification language
Annex B (normative) Timing types and characteristics
Annex C (normative) List of fatal errors
Annex D (normative) Coding the command code field of frames
Annex E (normative) Principle of the CRC
Annex F (normative) Random integer generation for response
                    from forgotten stations
Annex G (normative) Random number generation for
                    authentication (architecture without DLMS)
Annex H (normative) Systems management implementation
Annex I (informative) Information about exchanges

Describes two new architectures for local bus data exchange with stations either energized or not. For non-energized stations, the bus supplies energy for data exchange. The first architecture completes the base protocol (IEC 61142) with remote transfer services. The second architecture allows operation of DLMS services using the same physical medium and the same physical layer. This complete compatibility guarantees the possibility of using IEC 61142 and IEC 62056-31 equipment on the same bus. This standard replaces IEC 61142 (1993).


This publication is of high relevance for Smart Grid.