Difference between revisions of "BACnet MS/TP"

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Line 7: Line 7:
  
 
0x55
 
0x55
 +
 
0xFF
 
0xFF
 +
 
Frame Type
 
Frame Type
 +
 
Dest MAC
 
Dest MAC
 +
 
Src MAC
 
Src MAC
 +
 
Len MSByte
 
Len MSByte
 +
 
Len LSByte
 
Len LSByte
 +
 
Header CRC
 
Header CRC
  

Revision as of 08:27, 14 September 2018

BACnet "Master-Slave/Token-Passing" is the optional, RS-485 based physical layer for BACnet. It is based on cheap, relatively slow, serial communications.


Starting with Addendum 135-2008ab, 9600 and 38400 are the required baud rates and all of the others (19200, 57600, 76800, and 115200) are optional

MS/TP Frame Format

0x55

0xFF

Frame Type

Dest MAC

Src MAC

Len MSByte

Len LSByte

Header CRC

Data if len non zero


Keyword List
APDU BBMD BVLC BVLL DADR DNET Encoding I-Am LSAP MAC NPCI NPDU NSAP NSDU SA SADR SNET

Device Profiles

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Glossary