bacnet router (记录)

bacnet 广播管理设备

BACnet/IP使用UDP/IP在现有的IP网络中进行通信，在多个IP子网中如果需要对BACnet的广播消息进行管理的时候就需要一种特殊的BBMD设备（Broadcast Management Device）。

路由器将IP网络连接在一起，以便可以将来自一个网络的消息发送到另一个网络。大多数IP路由器不转发广播消息，这意味着发现无法发现另一个网络上的设备。为了解决此问题，BACnet提供了一种称为BBMD的技术BACnet / IP广播管理设备。

总体而言，带BBMD设备的网络很简单，在每个子网上安装BBMD（注意：每个子网最多只有1个BBMD设备），如果在一个子网中有1个以上的BBMD设备将会导致广播风暴。您可以通过指定每个BBMD的IP地址和掩码来配置BBMD，这使两个BBMD配置相同。当一个BBM收到广播时，它将消息转发到另一个BBMD，后者又在另一个网络上重新广播。它们由BDT文件配置，可以使用选定的BACnet服务即时修改。

该技术还提供了外部设备注册的功能。允许另外一个子网上的设备通过使用其他子网中部署的BBMD设备进行转发和路由消息BACnet通信。

Portable BASrouter

Product Overview
The Portable BASrouter is a compact BACnet multi-network router which provides versatile stand-alone routing between BACnet/IP, BACnet Ethernet (ISO 8802-3), and BACnet MS/TP networks. This portable BACnet router is easy to carry, web page configurable and it is powered by any 5 VDC source through it’s USB connection, such as the USB port of your laptop computer. It is a great commissioning and/or troubleshooting device with BACnet diagnostic capabilities. BACnet MS/TP “Status” webpage with graphical table of present MS/TP device status and network statistics, in addition to a BACnet/IP “Routing” webpage with a discoverable routing table become useful when setting up or troubleshooting a BACnet network.

Versatile Routing Between …
BACnet/IP and BACnet MS/TP
BACnet Ethernet and BACnet MS/TP
BACnet/IP and BACnet Ethernet
BACnet/IP and BACnet Ethernet and BACnet MS/TP
Two BACnet/IP Networks (between two UDP ports)
IP Network Support
Web server for commissioning and troubleshooting
DHCP option to automatically acquire IP address
Diagnostic web page with graphical MS/TP device status, Network Error count, and BACnet network traffic statistics
BACnet Routing Table web page
BACnet/IP Broadcast Management Device (BBMD)
Foreign Device Registration (FDR)