Obvius BACnet - Manual (Page 38)

BACnet Server for AcquiSuite Page 38 of 52
CVS:bacnet/Documentation/BACnet_Users_Guide.doc
7.8 How Do I... Span Subnets with Foreign Device Registration?
“FDR” stands for Foreign Device registration, a service which allows a BACnet device not on the local
IP subnet to relay its communications through the AcquiSuite.
No configuration is needed to use FDR. It is a service the AcquiSuite provides, which any BACnet
device may use.
Typically, BACnet devices or tools supporting FDR will provide an input-field where you can enter the
AcquiSuite's IP address and UDP port.
7.8.1 Typical Uses of Foreign Device Registration:
·
Remote diagnostics. BACnet/IP relies on broadcast messages which typically are not forwarded
by IP routers. BACnet scanning or management tools which support FDR may relay through the
AcquiSuite to access all BACnet devices on the AcquiSuite's subnet.
·
Stand-alone BACnet meters which don't support full BBMD mode, may nevertheless support
FDR. These meters can be configured to relay through an AcquiSuite to connect to a BACnet
network spanning IP subnets.
Note: In the above cases, the AcquiSuite should be configured as a full BBMD if other BBMDs are
present in the network. Otherwise, the "foreign device" relaying through the AcquiSuite will only be
able to "see" the local subnet, not the entire BACnet network.
The FDR and BBMD features are compatible and may be used together.
64 FDR entries are allowed.