Link (bacnet-BacnetMstpLinkLayer)

This component is the Bacnet MS/TP virtual link layer implementation.
Figure 42.   Link (Mstp Port) properties
Image

To access these properties, drag or copy an MstpPort from the bacnet palette (NetworkPorts node) to BacnetNetwork > Bacnet Comm > Network.

To update these properties, expand Config > Drivers > BacnetNetwork > Bacnet Comm > Network > MstpPort and double-clicking Link.

Property Value Description
Port Name text
Defines the communication port to use: none, COM2 or COM3.
Baud Rate drop-down list (defaults to Baud9600)
Defines communication speed in bits per second.
Mstp Address number in the range from 0 to 127 (defaults to 0) Sets a unique, 8-bit number, BACnet MAC (Media Access Control) address on an MSTP trunk in decimal.
Max Master number Defines the highest known master device on the network, with possible room for expansion, if needed.
Max Info Frames number Controls how many messages are sent before passing the token, and may be increased up to 50 to increase performance in some cases.
Support Extended Frames true or false (default) Enables and disables the use of larger frames, which, if supported by the device, may improve performance.