Transcription of Understanding BACnet MSTP Encoding
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Understanding BACnet MS/TP Encoding Steve Karg 18-Jan-2012. TUTORIAL. 2012, Steve Karg, used by permission 1. 18-Jan-2012 Understanding BACnet MS/TP Encoding Contents Introduction .. 3. A Quick Course in .. 4. General 5. MS/TP Frame .. 5. Establishing the MS/TP network .. 6. MS/TP Poll-For-Master frame from station 1 to station 2 .. 6. Data Expecting and Not Expecting Reply .. 8. The Network Layer .. 8. The Application Layer .. 8. Unconfirmed Services (Who-Is and I-Am) .. 9. Who-Is .. 9. MS/TP REQUESTER sends .. 10. I-Am .. 11. MS/TP RECEIVER 11. Confirmed Services (ReadProperty and WriteProperty) .. 12. ReadProperty-Request .. 12. MS/TP REQUESTER sends .. 15. ReadProperty - Response .. 16. MS/TP Response to Confirmed Service .. 17. MS/TP RECEIVER sends Reply Postponed.
Jan 18, 2012 · Who-Is and I-Am are Unconfirmed services. A BACnet-Unconfirmed-Request-PDU is defined in clause 20.1.3 as a service-choice followed by a service-request. The comment …
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