UNE-EN 1434-3:2016

Foreword
1 Scope
2 Normative references
3 Meter interfaces and protocols overview
4 Physical properties
    4.1 M-Bus interface
    4.2 Optical interface
    4.3 Inductive interface
    4.4 CL interface
5 Heat meter communication using the data transmission
    protocol of EN 61107
    5.1 Protocol modes according to EN 61107 for
          heat meters
    5.2 Restrictions for heat meters
    5.3 Data presentation for heat meter
    5.4 Coding of the unit in the data set
    5.5 Coding of the value in the data set
    5.6 Presentation of related values
6 Heat meter communication using the data transmission
    protocol of EN 60870 pt5
    6.1 Protocol modes according to EN 60870-5 for
          heat meters
    6.2 Frame formats used
    6.3 Communication between requesting device (Master)
          and heat meter (slave)
    6.4 Coding of data records
    6.5 Fixed data structure
    6.6 Variable data structure
Annexes
A (informative) Additional information using M-Bus
    A.1 Arrangement for test of signal quality-sending
    A.2 Arrangement for test of signal quality-receiving
B (informative) Worst case calculation for M-Bus system
    B.1 Assumptions
    B.2 All slaves are at the end of the M-Bus line
    B.3 The slaves are equally distributed over the
          M-Bus line
C (informative) Additional information about the
    master-unit for the M-Bus
    C.1 Master side interface to the M-Bus
    C.2 Master side interface for local data read out
    C.3 Medium size level converter
    C.4 Full size level converter
D (informative) Description of inductive interface,
    primary part
    D.1 Transmission principle
    D.2 Construction of inductive reading head
    D.3 Electrical characteristic values
E (informative) Additional information for heat meters
    E.1 Recommendation for heat meter test interface
    E.2 Registration of supplier's ID
    E.3 Additional information regarding EN 6107 protocol
    E.4 Additional information regarding the M-Bus

This European Standard specifies the general requirements and applies to heat meters. Heat meters are instruments intended for measuring the energy which in a heat-exchange circuit is absorbed (cooling) or given up (heating) by a liquid called the heat-conveying liquid. The meter indicates heat in legal units.Part 3 specifies the data exchange between a meter and a readout device (POINT / POINT communication). For these applications using the optical readout head, the EN 62056-21 protocol is recommended.For direct or remote local readout of a single or a few meters via a battery driven readout device, the physical layer of EN 13757-6 (local bus) is recommended.For bigger networks with up to 250 meters, a master unit with AC mains supply according to EN 13757-2 is necessary to control the M-Bus. For these applications the physical and link layer of EN 13757-2 and the application layer of EN 13757-3 is required.For wireless meter communications, EN 13757-4 describes several alternatives of walk/drive-by readout via a mobile station or by using stationary receivers or a network. Both unidirectionally and bidirectionally transmitting meters are supported by this standard.