Source Address

The same formats are used for Source and Destination addresses. Substitute "Destination" for "Source" below if desired.

Notes

1. Part of the NPDU (Network Layer Protocol Data Unit)
2. SADR - Ultimate Source MAC Layer Address, as opposed to SA - Local Source Address
3. If the SADR exists, then the message has arrived from a router (Section 6.5.4, page 57)
4. A device need not know it's own Network Number. (Section 6.5.4, page 57)

SADR (Control =0x0B)

Octets	Name								Meaning
1	SLEN								Source MAC Layer Address Length
Variable	SADR								Source MAC Layer Address

SLEN/SADR Examples

Physical Layer	SLEN
MSTP	1 (Usually switch on device)
BACnet/IP	6 (IP Address and Port)

Keyword List

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

Edit this box. Glossary