Distech Controls ECLYPSE APEX User Manual

131ECLYPSE APEX
Inter-Building BACnet Connection
BACnet network connections between buildings must be made using BACnet/IP as shown below.
ECLYPSE
EOL
Externally
Set
END
EOL ON
ECLYPSE
EOL
Externally
Set
END
EOL ON
ECLYPSE
EOL
Externally
Set
END
EOL ON
Figure106: Typical Inter-Building Connection Using BACnet/IP or FOX
BACnet/IP Broadcast Management Device Service (BBMD)
Though BACnet/IP uses IP protocol to communicate, a standard IP router does not forward broadcast
messages which are important in BACnet to identify services that are available within the BACnet in-
ternetwork.
When two ECY Series Controllers communicate to each other over a standard IP connection that is
separated by an IP router, both controllers need the BACnet/IP Broadcast Management Device
(BBMD) service to be configured and operational.
The BBMD service identifies BACnet messages on the BACnet MS/TP network that are intended for a
device located on another BACnet network. The BBMD service encapsulates these messages into an
IP message to the appropriate BBMD service of the other BACnet MS/TP network(s). The BBMD ser-
vice on these networks strips out the encapsulation and sends the BACnet message on to the appro-
priate devices.
When sending BACnet messages across a standard IP connection that has an IP router, there must
be one BBMD service running on each BACnet MS/TP network.
BACnet MS/TP Communication Data Bus Fundamentals

Distech Controls ECLYPSE APEX Specifications

General

Brand	Distech Controls
Model	ECLYPSE APEX
Category	Control Systems
Language	English