BS EN 13757-6-2008 pdf download.Communication systems for meters and remote reading of meters Part 6 : Local Bus.
This BS EN 13757-6 specifies the physical layer parameters of a local meter readout system (“Local Bus”) for the communication with and the readout of a single meter or a small cluster of meters (max. 5) via a single battery powered readout device (master”) which can be connected temporarily or stationary for the communication directly to a meter (i.e. local readout) oc via a fixed wiring or a small bus (total cable length max. 50 m, i.e. local remote readout).
For generic descriptions concerning communication systems for meters and remote reading of meters, refer to
EN 13757-1.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (Including any amendments) applies.
EN 13757-2:2004, Communication systems for and remote reading of meters — Part 2: Physical and link layer
3 Physical Layer Specifications
The Local Bus is an alternative to the M-Bus. it Is restricted to small installations (Minibus installation according to EN 13757-2:2004. Annex E.6.1 type E) and optimized for special battery-driven masters. Usually the readout frequency is limited by the meter. The Local Bus does not support meter power supply from the bus. Note that this meter interface is not compatible with M-Bus masters according to EN 13757-2. To facilitate the meter power management, the master shall switch the bus power on (i.e. enter the master mark send state) not more than 10 s before any meter communication.
NOTE Annex A shows a possible circuit deagram for implementing such an interface.
A meter equipped with a Local Bus interface shall meet the following requirements:BS EN 13757-6-2008 pdf download.
BS EN 13757-6-2008 pdf download
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