User manual

PRODUCT OVERVIEW WHEN WOULD I USE A ROUTER?
MATRIX BACnet Router User Manual (6/6/2007) 1-5
1.2.2 MULTI-VENDOR MS/TP INTEGRATION
A BACnet router is commonly used to third-party vendor BACnet MS/TP products. This approach allows
foe each vendor to communicate on their own physical network without disrupting communications on
another network that may contain another third-party vendor.
Although the BACnet standard defines specific characteristics for each communication layer, vendors are
permitted to implement optional features that could effect network bandwidth performance negatively. For
example, a manufacturer may not support specific MS/TP baud rates or implement slower timing
characteristics. For this reason, isolating vendors from one another using a BACnet router has become
common practice in multi-vendor installations.
Figure 1-2 Example of a BACnet Network with Third-Party Devices
In the example above, MATRIX BACnet Routers are used to isolate EIA-485 networks between different
manufacturers. When integrating with third-party MS/TP devices, American Auto-Matrix recommends
using a MATRIX BACnet Router to isolate vendors to their own communication bus. This practice will
greatly reduce the potential for communication issues.
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SBC-STAT3
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SBC-STAT3
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MATRIX-RTR
Network Controller
Auto-Pilot
with BACnet Driver
Web-Pilot
MATRIX-RTR
Network Controller
Vendor ABC
Vendor ABC
BACnet/IP ; BACnet/Ethernet
BACnet/MSTP
STATbus
WAN/Internet