Transcription of Dedicated Application Layer (M-Bus)
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Dedicated Application Layer (M-Bus)
Application Layer M-Bus Page 1 of Application Layer (M-Bus)ForewordThis document has been prepared by the WG4 of CEN TC document is a working : This standard is a backward compatible enhancement to EN1434-3 and is interoperable with IntroductionThe bus communication system of EN1434-3 is commonly called M-Bus. Its Application Layer describesa standard especially for meter readout. It can be used with various physical layers and with link layersand network layers which support the transmission of variable length binary transparent first byte of an Application Layer telegram is the CI-field (Control Information) which distinguishesbetween various telegram types and Application functions.
W4N107R4.DOC Application Layer M-Bus Rev.4 4.7.1998 Page 6 of 4849 Fig. 4 Data Header CI=7Ah 3.3 Identification number The Identification Number is either a fixed fabrication number or a number changeable by the customer, coded with 8 BCD packed digits (4 Byte), and which thus runs from 00000000 to 99999999.
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