BACnet/IP to Ethernet Router (B3040)

Overall specifications:

• Power: 120VAC at under 50W, DC at 12VDC at 3A.
• Operating temperatures: 0 to 40ºC
• Storage temperature: -20 to 80ºC
• Relative Humidity: 0-90% @ 40ºC non condensing
• Dimensions: 210 x 150 x 33 mm (8.3 x 6.0 x 1.3 inches)
• Physical protection: IP30 DIN EN 60529 (VDE 0470) (no entry of 2.5mm probe, NOT waterproof)
• System LED: power as labelled  ON=OK

Ethernet:

• IEEE 802.3 10/100 MBPS
• 10BaseT, 100BASETX phsyical. RJ45 connectors
• Half/Full duplex
• 100m (max) CAT5 cable length.
• LEDs: link and activity as labelled.

Regulatory Compliance:

• FCC and CE marked
• ROHS

Options:

• International power supply.
• DIN rail mounting kit.
• Rack mounting kit.
• External network surge protector.

Applications - see AppNotes

Connecting BACnet Native Ethernet network and a BACnet/IP network

BACnet has the same protocol for the monitoring, automation and field levels. It is unified top to bottom. BACnet field controllers with direct I/O and application specific features (B-ASC) can communicate all the way up to BACnet/IP Operator Workstations (B-OWS) and BACnet Building Controllers (B-BC).

In order to interconnect such levels, a BACnet Router is needed. The Cimetrics BR2 is such a BACnet Router. For BACnet/IP and Ethernet the interface is 10/100 Half/Full Duplex RJ45 standard Ethernet station-side.

The BACnet/IP port on the B3040  connects to the network Ethernet/TCPIP port using a standard CAT5 cable. The Ethernet port connects to the target BACnet Native Ethernet LAN in the same fashion. The B3040  can be powered from any 120VAC source. The BR2-E is setup using its embedded webpages.

The Ethernet LAN must have a BACnet Network Number unique from the BACnet Network Number assigned to the BACnet/IP network connection. Nothing precludes the use of multiple BR2-E routers in the same Ethernet network as long as unique BACnet network assignments are made for each created BACnet/IP configuration access network.

Bridging BACnet Automation and Field Levels with Multiple Routers

Multiple BACnet Routers can reside within the same BACnet internetwork. A group of Ethernet devices located along an Ethernet LAN, spread in any fashion which adheres to the Native Ethernet cabling rules, can be bridged to a BACnet/IP network with a BACnet Router. So too can any others like ARCNET, MSTP (or any supported BACnet datalink) be attached using another BACnet Router.

This means of extension is often better than extending existing Native Ethernet (or ARCNET or MSTP) networks using repeaters. It can also help alleviate LAN loading problems with token collisions, node numbers and cable lengths.

The BACnet/IP port on the B3040  connects to the main network Ethernet/TCPIP port using a standard CAT5 cable. The Native Ethernet port connects to the target BACnet Native Ethernet LAN. The BR2-E can be powered from any 120VAC source. The B3040  is setup using its embedded webpages.

The Native Ethernet LAN must have a BACnet Network Number unique from the BACnet Network Number assigned to the BACnet/IP network connection. Nothing precludes the use of multipleB3040  routers on the same Native Ethernet network as long as unique BACnet network assignments are made for each created BACnet/IP configuration access network.

Commissioning a BACnet Native Ethernet device using a BACnet/IP Laptop or other Commissioning Computer

To commission BACnet Native Ethernet devices one has generally been forced to use a special PC driver for the Ethernet interface to communicate with the Native Ethernet LAN. The secret is that most BACnet Native Ethernet software can be run against BACnet/IP and communicate via BACnet Routing to BACnet Native Ethernet to achieve this configuration/setup connectivity. The CimetricsB3040  can accomplish this connectivity. The BACnet/IP port on the BR2-E connects to the PC’s Ethernet/TCPIP port using a standard CAT5 cable. The Native Ethernet port connects in a similar fashion. The B3040  can be powered from any 120VAC source. The B3040  is setup using its embedded webpages.

The Native Ethernet LAN must have a BACnet Network Number unique from the BACnet Network Number assigned to the BACnet/IP network connection created by the PC connection. Nothing precludes the use of multiple B3040  routers on the same Native Ethernet network as long as unique BACnet network assignments are made for each created BACnet/IP configuration access network