Orion System PT-Link II BACnet3 - Manual (Page 24)

Zone
Zone
5. TROUBLESHOOTING
PT-Link II BACnet3 Interface 24
5.3 Troubleshooting the PT-Link Controller
5.3.1 Addressing WattMaster Devices
in a BACnet
®
Network
Each PT-Link II BACnet ® generates only one BACnet ® device re-
gardless of the number of WattMaster controls connected to it. This
device will have all the properties of all the WattMaster controls
connected. The instance of the device is equal to the unit address. The
properties of each control can be differentiated by an offset of 500.
Examples:
1.) Properties of the controller address as 1 will range
from 0 to 499.
2.) Properties of the controller address as 2 will range
from 500 to 999.
3.) Properties of the controller address as 3 will range
from 1000 to 1499.
To search for the instance of a specifi c property, follow the next
formula:
Property Instance = ((Controller Address – 1) * 500) + Instance
Number from table.
Example:
1.) The PT-Link II BACnet ® has a Node ID equal to fi ve.
2.) Two VCM controllers connected and addressed to one
and
four.
3.) Searching for the Outdoor Temperature of each
controller.
4.) Instance of the Outdoor Temperature in the VCM table
equal to AI: 54.
5.) Client will only see Device 5.
6.) Under Device 5 it will see AI: 54 for the Outdoor
Temperature of the unit addressed as 1 and AI: 1554
for the Outdoor Temperature of the unit addressed as 4.
NOTE: To simplify the calculation, we recommend that the
WattMaster controllers be addressed in sequential
order from one to the last controller without any
unused address(es) in between.
5.3.2 CAS BACnet Explorer for Vali-
dating PT-Link in the Field
Sierra Monitor Corporation has arranged a complimentary 2-week
fully functional copy of CAS BACnet Explorer (through Chipkin
Automation) that can be used to validate BACnet MS/TP commu-
nications of PT-Link in the fi eld without having to have the BMS
Integrator on site. A Serial or USB to RS-485 converter is needed
to test BACnet MS/TP.
5.3.2.1 Downloading the CAS Explorer
and Requesting an Activation Key
To request the complementary BACnet CAS key, go to http://app.
chipkin.com/activation/twoweek/ and fi ll in all of the information.
See Figure 30. Enter Vendor Code “WattMaster2BACnet”. Once
completed, the email address that was submitted will be registered.
Figure 30: Requesting a Two-Week Trial