Chipkin™
VeederRoot® Gateway User Manual
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Page 41 of 67
Figure 5.2-2 - Reviewing Data with the CAS Modbus Scanner
READING BACNET DATA
You can access BACnet report data from the Veeder-Root device by using discover to detect gateway
objects and their properties. Although each BACnet device (including the gateway) needs to have a
unique instance number, discovery does not require the number to be known in advance. Discovery
will not occur if the device or application reading the data is on another subnet. This can be resolved
by changing the gateway’s IP address to match the subnet or by installing BBMD. It’s the
responsibility
of the company installing the BAS system to provide BBMD. For more information about reading
BACnet data or installing BBMD, please refer to these guides:
•
•
http://www.chipkin.com/articles/bacnet
You can discover the device and poll for values using the CAS BACnet Explorer. For more information
about the CAS BACnet Explorer, please visit:
http://store.chipkin.com/products/tools/cas-bacnet-
Interpreting BACnet Data
BACnet has a mechanism for reporting the validity of data. If the gateway loses its connection to the
Veeder-
Root device (or a data point cannot be read), the data object’s out of service property is set to
