Highway Addressable Remote Transducer Protocol: Difference between revisions

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OSI model does not belong here
spelling error: "poling" should be "polling"
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;bit 7, if high use Unique (5 byte) address, else use PolingPolling (1 Byte) addresses.
;bit 6 and 5, Number of Expansion bytes: normally it set if Expansion field is used, normally 0.
;bit 4 and 3, Physical layer type: 0=Asynchronous, <br> 1=Synchronous