UNC-510 BACnet MS/TP driver will not stay enabled when attempting to communicate at 38.4kbaud

Issue

Added BACnet MS/TP devices to UNC-510, configuring the port to a baud rate of 38.4kbaud and cannot keep the MS/TP port enabled.

Product Line

TAC I/A Series

Environment

UNC-510 with BACnet 527i jar file

Cause

Maximum baud rate for the RS-485 port(s) on a UNC-510 is 19.2kbaud.

Resolution

Must set the baud rate for the MS/TP driver to 9600 or 19,200 baud.   Faster baud rates are not supported by the UNC-510 hardware.

If adding the BACnet jar file to a previously loaded UNC, you must also add the following line
driver.mstp=tridium.nre.vxworks.mstp.VxWorksMstpDriver
to the drivers.properties file in the UNC.  Please note that the information in this line is case sensitive and must be entered as shown.