BS EN 1434-3:2008 Heat Meters. Data exchange and interfaces
BS EN 1434-3 specifies the data exchange between a heat 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.
Contents of BS EN 1434-3:
- Foreword
- Scope
- Normative references
- Meter interfaces and protocols overview
- Physical layer
- Link layer
- Application layer
- Application
- Recommendation for heat meter test interface
- Additional information for heat meters
- Automatic protocol detection and wake-up for the optical interface
- Usage of heat meters in control applications
- Bibliography
