Page 5–18
DuRApulse GS4 AC Drive User Manual – 1st Ed, Rev A - 10/20/2017
Chapter 5: Serial Communications
baCnet serial COMMUniCatiOn
abouT baCneT
BACnet is an ASHRAE communication protocol for building automation and control networks.
(ASHRAE: American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.).
GS4’s BACnet is based on BACnet-2004 (ver.1, rev.4).
BACnet’s regulations are related to several kinds of physical layers’ interfaces. The physical layer
built inside GS4 is achieved via MS/TP interface.
The BACnet of GS4 supports a device type called B-ASC. B-ASC supports six types of services such
as DS-RP-B, DS-RPM-B, DS-WP-B, DM-DDB-B, DM-DOB, and DM-DCC-B.
parameTer summary for baCneT
GS4 Communications Parameters Summary – BACnet Communication
Parameters
Parameter Range
Modbus Address
Default
Setting
Hex Dec Octal
P9.86
COM1 Protocol
0: Modbus 485
1: BACnet
0956 42391 4526 0
P9.87
BACnet Address 0~127
0957 42392 4527 0
P9.88
BACnet Baud Rate 9�6~76�8Kbps
0958 42393 4530 0
P9.89
BACnet Device ID L 0~65535
0959 42394 4531 0
P9.90
BACnet Device ID H 0~63
095A 42395 4532 0
P9.91
BACnet Max Address 0~127
095B 42396 4533 0
P9.92
BACnet Password 0~65535
095C 42397 4534 0