Design of BACnet MS/TP state machine based on RS485 bus
WU Hong-kun
FU Xiao-juan
WU Zhen-yuan
GUO Yan-ying
Abstract：The work process and work state transition of the master-slave / token passing protocol(BACnet MS/TP)were described developmentally in this paper. This protocol belongs to the BACnet data link layer protocol, and runs on the RS485 bus. The realization method of MS/TP state machine was worked out through analyzing the work state transition of the protocol. After verification, a conclusion was obtained: the state machine designed using C language had a stable work performance under the condition of 60 bus devices and 38.4 kbps.
Keywords：BACnetRS485State machineMS/TP
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 65-69 )