User guide

BB2-7040 User Guide – Rev. 1.2 Page 30
The description is the device property returned when Description, property ID 28, is read from the gateway. The location
is the device property returned when Location, property ID 58, is read from the gateway.
If you will be using BBMD, the port, time-to-live, and IP address of the remote BBMD must be given (for up to three
BBMD's). The local BBMD will attempt to register with the remote BBMD's whose addresses are given. Disable BBMD
by setting time to live to zero (do this if not familiar with BBMD - this feature is only used in very large networks, and
there should be only one BBMD enabled on any given subnet).
If there are no other BBMD's we want to register with, but we want to allow other 'foreign' devices to register with us,
enable BBMD by setting the time to live, but leave all BBMD IP addresses set to 0.0.0.0. Up to 128 foreign devices may
register with us, while we may register with up to 3 other BBMD's. Broadcast messages received from any of the other
BBMD's will be resent to all 128 foreign devices registered with our BBMD.
The object limits default to what the device supports, but may be set lower so that auto-discover routines in other
BACnet clients only find the set of objects you are actually using. A minimum of 1 object of each type is required for
proper device functioning.
Check the "allow" check box to allow faults to self-reset. These faults include things like Modbus RTU exception
response, timeouts, etc. Normally the client needs to read the realiability code to acknowledge the fault before it will
automatically reset. By checking the "allow" check box, faults will automatically self-reset without
acknowledgement. This is required any time the client does not periodically read reliability codes but does check fault
status.
Click Save to store. This store process will take a little while as these parameters are being saved to non-volatile
memory. A change in port number will not take effect until the next system restart.
MSTP Port parameters: Enter parameters as applicable. The Max Masters count must be equal to or higher than the
highest MAC address on the MSTP link. Click Update, then save the configuration file on the Config File page. The
IP port parameters are saved in configuration memory, the MSTP parameters are saved in the XML configuration file.
8.3 Local Port Settings