Echelon SmartServer 2.2 - Manual (Page 440)

SmartServer 2.2 User’s Guide 441
6. A functional block representing the Pulse Counter application and all of its static data points are
added to the bottom of the i.LON App (Internal) device tree, and the Pulse Counter: Configure
Web opens in the application frame to the right. Note that construction symbol overlaid onto the
Pulse Counter application icon in the upper-left hand corner of the Web page indicates that the
application has not been configured yet.
7. Click Submit.
To open the Pulse Counter application from an existing Pulse Counter functional block, follow these
steps:
1. Click General if the SmartServer is not already operating in General mode. If the SmartServer is
in Driver mode when you click the functional block, the Setup - LON Functional Block Driver
Web page opens instead of the Pulse Counter application.
2. Click the Pulse Counter functional block representing the Pulse Counter to be opened. The Pulse
Counter: Configure Web page opens in the application frame to the right.
Configuring the Pulse Counter Application
You can configure the Pulse Counter application on the SmartServer following these steps:
1. To convert the units per pulse, enter multiplier and divisor factors in the Multiplier and Divisor
boxes. For example, if a power meter sends 1 pulse every 10 kilowatt hours (kWh), you can
convert the data to kWh and by entering 10 in the Multiplier box and 1 in the Divisor box.
For example, if a power meter sends 1 pulse every 10 kilowatt hours (kWh) and the building has a
scale factor of 0.5 kWh /pulse, you can convert the data to kWh by entering 1 in the Multiplier
box and 2 in the Divisor box.
2. To reset the sample interval used to calculate the pulse rate, click Trigger. The SmartServer
stores the accumulated pulse count and the pulse rate in the nvoPcValue and nvoPCValueDif
data points, respectively, and starts a new sample interval. This also resynchronizes the pulse
counter.
The values stored in the nvoPcValue and nvoPCValueDif data points are sent when the time
interval specified in step 3 expires or the value of the nviPcTrigger data point changes from off to
on.