Matrix BACNET, Руководство пользователя, Страница: 11 / 46

P
RODUCT
O
VERVIEW
W
HEN
W
OULD
I U
SE A
R
OUTER
?
MATRIX BACnet Router User Manual (6/6/2007)
1-5
1.2.2 M
ULTI
-V
ENDOR
MS/TP I
NTEGRATION
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.
NB-VAV
VAV Boxes
NB-ASCe
Packaged Equipment
NB-ASCe
Packaged Equipment
ipment
ems
nits
SBC-STAT3
Can be used on
all NB Controllers
75°
F
SBC-STAT3
Can be used on
all NB Controllers
75°
F
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