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BACnet MS/TP—On-Board Communication
POWERXL SERIES VFD MN040010EN—June 2018 www.eaton.com
BACnet MS/TP—On-Board Communication
BACnet stands for Building Automation and Control
Networks. It is the common name for the communication
standard ISO 16484-5 which defines the methods and the
protocol for cooperating building automation devices to
communicate. Devices can be designed to operate using
BACnet communication protocol as well as utilizing BACnet
protocol to communicate between systems. BACnet is an
internationally accepted protocol for building automation (such
as lightning control, air conditioning and heating automation)
and control over a communications network. BACnet provides
a method by which computer-based control equipment, from
different manufacturers can work together, or “interoperate.”
For this to be achieved, components must be able to
exchange and understand BACnet data messages. Your drive
is equipped with BACnet support as standard.
BACnet MS/TP specifications
Table 89. BACnet MS/TP technical data
Item Description
Interface RS-485
Data transfer method RS-485, half-duplex
Transfer cable STP (Shielded Twisted Pair), type Belden
or similar
Connection: Electrical isolation Communication: Functional
Connection: BACnet MS/TP Communication: As described in ANSI/
ASHRAE Standards 135-2004
Connection: Baud rate Communication: 9600, 19200, 38400,
76800, 115200
BACnet MS/TP connections
The control board is located inside the control unit of the drive.
Figure 28. Principal example diagram
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