By forcing values to input points, you can test the appropriateness of the application logic that you create. You can verify if the output values return desired values. If there are discrepancies you can fine tune your logic by forcing values by trial and error to generate the desired output.
In the Online debugging mode, the values you force are written to the controller and stored in the tool.
You can force values to each field of Software input points (NVIs and NCIs) in LonSpyder and to each Software point (Network Inputs and Network Setpoints) in BacnetSpyder, in the Engineering and Online debugging modes. However, in these modes, the Force values option is not available for physical points, and software inputs and points configured as constant. They are available only in the Simulation mode.
Note: To force write all points that are exposed on the wiresheet, you can right-click the points on the wiresheet and use the Force Values option.
You cannot force write values to any point of a logic in an Application library.
The Honeywell LonSpyder tool does not support forcing values to a Many-to-one NVI. You can use the Bindings feature to test the Many-to-one NVI.
To force write points to the controller:
| Name | Definition |
| Input Point Name | Shows all the Software input points (NVIs and NCIs) and Bacnet Objects. It is non-editable. |
| Mode | You can select the following options for the points as mentioned: NVI/Network Input:
Note: Auto or the previously set mode is the default mode displayed. NCI/Network Setpoint:
Note: Set or the previously set mode is the default mode displayed. |
| Units | This is editable only when the Mode is Override . It shows the unit you selected. |
| Value | This is editable only when the Mode is
Override. It shows the value
that you want to write to the controller. Note: You can force write invalid values to a point by keying in alphabets. Such an invalid value is displayed as Nan. Any value outside the specified range is also considered invalid. For example, if the the lower range is 0 and the upper range is 20, values such as 21 or -1 are considered invalid. |
| Upper Range | This is non-editable. It shows the upper limit of the Network Variable. |
| Lower Range | This is non-editable. It shows the lower limit of the Network Variable. |
| Select point path | Indicates the location of the component. It is a relative and not an absolute path |
| Select point ord | Indicates the absolute path. It can be used to resolve the component. |
| Clear All | Invoke this option to put all the points to the default state. For an NVI, this sets mode to Auto (i.e value = Null or to the current value in the controller) For an NCI, this sets the mode to Set with its value. |
| OK | Saves the entered information and closes the dialog box. |
| Cancel | Closes the dialog box. Any information entered is lost. |
Many to one NVs in LonSpyder, and physical IOs are cleared on moving to the online debugging mode, always.