The license for a single BACnet network across all BACnet devices and related child components in the station regardless of the BacnetComm network port used to reach any device (Ip Port, ScPort, EthernetPort, MstpPort) includes these maximum limits:
Limits do not apply to the server operations of the BACnet driver, and any license entry value of none, indicates that no set limits apply for that item type.
The export property in the bacnet license determines whether a station can provide BACnet server functions. When enabled (true), components, files, or histories are exported to BACnet.
If the export property is disabled (false), no components, files, or histories are exported to BACnet apart from the single BACnet device object that represents the
station (as configured by the BACnet Local Device). Although you can still use the various views of the local device’s Export Table to add BACnet export descriptors (and file and history descriptors), all descriptors report a fault status, with a fault
cause of Server capability not licensed.
Bacnet MS/TP is a separately-licensed feature, requiring a feature named mstp in the remote controller’s license file.
For example:
<feature name="mstp" expiration="never" port.limit="5"/>
port.limit defines the number of MS/TP trunks (RS-485 ports) that can be used. This ranges from 1 to 6, varies based on the type of the host controller, and depends the license purchased.
Due too electrical considerations, the EIA-485 (or RS-485) load factor of connected MS/TP devices determines how many devices a trunk can physically support. This ranges from 31 (full load) to up to 127 (quarter load) devices.
Other device or platform limits in the license’s bacnet feature also apply.