BS EN 1434-3:2015
$167.15
Heat meters – Data exchange and interfaces
| Published By | Publication Date | Number of Pages |
| BSI | 2015 | 38 |
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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | European foreword |
| 7 | 1 Scope 2 Normative references |
| 8 | 3 Meter interfaces and protocols overview Table 1 — Possible combinations of interfaces and standards 4 Physical layer 4.1 General 4.2 Physical layer optical interface 4.3 Physical layer M-Bus 4.4 Physical layer wireless interface |
| 9 | 4.5 Physical layer current loop interface 4.6 Physical layer Local Bus 5 Link layer 5.1 Link layer optical interface 5.1.1 Link layer optical interface with the EN 13757-2 protocol 5.1.2 Link layer optical interface with the EN 62056-21 protocol 5.1.3 Link layer optical interface with automatic protocol recognition 5.2 Link layer of M-Bus and Local Bus 5.3 Link layer wireless interface 5.4 Link layer current-loop interface |
| 10 | 6 Application layer 6.1 Application layer optical interface 6.1.1 Protocol modes according to EN 13757-3 for heat meters 6.1.2 Protocol modes according to EN 62056-21 for heat meters 6.1.2.1 General 6.1.2.2 Restrictions for heat meters 6.1.2.3 Calculation of block check character 6.1.2.4 Syntax diagram 6.1.2.5 Data presentation for heat meter |
| 11 | 6.2 Application layer M-Bus and Local Bus 6.2.1 General 6.2.2 Coding of data records 7 Application 7.1 General 7.2 Physical layer 7.3 Link layer 7.4 Application layer 7.5 Control applications |
| 12 | Annex A (informative) Recommendation for heat meter test interface |
| 13 | Annex B (informative) Additional information for heat meters B.1 Additional information regarding the EN 62056-21 protocol B.2 Data set Figure B.1 — Signal direction |
| 14 | B.3 Coding of the data set identification number B.3.1 Schematic structure Figure B.2 — Schematic structure B.3.2 Values for “T” group code B.3.3 Values for “UU”, register codes |
| 15 | Table B.1 — Values for “UU”, register codes |
| 20 | B.3.4 Values for “W”, number of the tariff B.3.5 Use of “*/&” and “VV” for prestored values B.3.6 Coding of the unit in the data set Table B.2 — Coding of the unit in the data set |
| 21 | B.3.7 Coding of the value in the data set B.3.8 Coding of the measured value B.3.9 Coding of the error message B.3.10 Coding of the date and/or time stamp Figure B.3 — Coding of the date and/or time stamp |
| 22 | B.3.11 Presentation of related values |
| 23 | Annex C (informative) Automatic protocol detection and wake-up for the optical interface C.1 Introduction C.2 Trying EN 13757-2 protocol C.3 Trying the EN 62056-21 protocol |
| 25 | Annex D (informative) Usage of heat meters in control applications D.1 Heat meter D.1.1 General D.1.2 Application layer: data records D.1.3 Application: actuality of the data |
| 26 | D.1.4 Application layer: acceptable data types (DIFs) D.1.5 Application layer: acceptable units (VIFs) D.2 Controller D.2.1 Start until first answer |
| 27 | D.2.2 Start until first successful readout |
| 28 | Annex E (informative) Protection techniques for M-Bus meters against surge/lightning Figure E.1 — Without ground reference (100 x 6 kV x 50 μs) |
| 29 | Figure E.2 — With ground reference (100 x 6 kV x 50 µs) Figure E.3 — Without ground reference (100 x 10 kV x 50 µs, max. 250 Vrms) Figure E.4 — With ground reference (100 x 10 kV x 50 µs) |
| 30 | Figure E.5 — Without ground reference (100 x 2 kV x 50 µs) Figure E.6 — With ground reference (100 x 2 kV x 50 µs) Figure E.7 — Without ground reference (100 x 10 kV x 50 µs or 100 x 2 kV x 1 000 µs) |
| 31 | Figure E.8 — With ground reference (100 x 10 kV x 50 µs or 100 x 3 kV x 1 000 µs) Figure E.9 — Without ground reference (100 x 8 kV x 1 000 µs) Figure E.10 — With ground reference (100 x 6 kV x 1 000 µs) |
| 32 | Annex F (informative) Additional information about the master-unit for the M-Bus F.1 Master side interface to the M-Bus F.2 Master side interface for local data read out |
| 33 | Figure F.1 — Master side interface for local data read out F.3 Full size level converter |
| 34 | Figure F.2 — Full size level converter |
| 35 | Bibliography |
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BS EN 1434-3:2015 – TC:2020 Edition
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