XL15C Configuration

Configuring Excel 15C Network In

The Excel15C controller supports two types of Math function - General Purpose and Network Special. The Network In object is used to configure a Network Special math function. Up to six functions are allowed.

The Network In object provides six network inputs, each capable of special math functions for bound network points. Three math functions are available for temperature points and three for terminal load points. Each math function network input (i.e. nviTemp1) is limited to six source points and the operators are limited to Minimum, Maximum and Average.

Apart from this, the Excel15C controller also provides some inputs that are available to coordinate the Excel15C operation with other controllers.The following are those network variables - nviApplMode, nviDATemp, nviEconEnable, nviOccupancy, nviEmergOverride, nviBldgStatPress, nviDuctStaticPress, nviRATemp, nviRARH.The values on these variables are placed into the analog input array for the Excel15C algorithms to use.

Procedure

  1. Drag a NetworkIn object from the palette and drop it on the wiresheet.
  2. Right click and invoke "Config" menu option.
  3. Select the type of function for each of the operation.
  4. Select "Minimum" operator to have an Output = Minimum (Connection 1..6).
  5. Select "Maximum" operator to have an Output = Maximum (Connection 1..6).
  6. Select "Average" operator to have an Output = Average (Connection 1..6).
  7. To select the analog inputs for each of the Math operation, right click on any device under the LonNetwork and select "Link Mark".
  8. On the wiresheet of the Excel15C device, right click on the NetworkIn object and select "Link From DeviceXXX" where DeviceXXX is the device on which Link Mark option was last invoked.
  9. This would bring up the Link dialog.
  10. Select any of the appropriate points from the source controller that can be linked to nviTemp1.. nviTemp3 or nviTerminalLoad1..nviTerminalLoad3 of Excel15C controller.
  11. Click Ok to save the link.
  12. Go to the Lon Link Manager view of the Lon Network and select "Bind" option to download the bindings to the controller.
  13. If you want to use any of the internal network vairables as inputs for the algorithms like Logic Loops, create  a link between the Network In object and a Logic Loop object.

Note:

Any change in the configuration needs to be downloaded to the controller. Until then, the objects would be marked as "Stale".This is an indication that these changes need to be downloaded to the controller.Invoke "Download" to download the configuration changes to the controller.

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