Nv Manager
This Network Variable (Nv) Manager view is the default view of a Lon device (except Local Lon Device). Use it to browse through a table of the device’s network variable: Lon components nvi and nvo. You can use the standard
table edit controls to change the number and types of data displayed in this view. The system updates summary data dynamically
through polling.
Figure 64. Empty Nv Manager with column options
To access this view, right-click a LonDevice in the Nav tree and click or double-click the LonDevice.
Columns
Data columns provide the current information about each link and binding. By default, this table is sorted by selector.
| Column | Description |
|---|---|
| Name | Displays the network variable name. |
| Summary | Displays the value of one or more related properties. |
| Nv Index | Displays the location of the variable in the record. |
| Snvt Type | Displays the type of standard network variable for this binding. |
| Object Index | Displays information related to the object. |
| Member Index | Displays information related to the member. |
| Poll Enable | Indicates of polling is on or off. If this column displays true, there are unbound links and the nv is not bound locally. If false, polling is prevented on an nv. The driver still performs the initial read when the nv is first subscribed, but subsequent polling by the poll service does not occur. |
| Polled | Some Lonworks devices include one or more nvos that are polled types, meaning that the nvo does not send nv updates upon a value change. Such an nvo must be polled. Typically, any such nv represents a data item that does not frequently change. |
| Auth Conf | |
| Service Conf | |
| Priority Conf | Reports if the priority flag is set. |
| Modify Offline | |
| Sync | |
| Changeable Type | Sists all network variables in the device |
| Bound to Local | Displays a value when an output nv with a proxy is bound. |
| Priority | Displays processing priority. |
| Direction | Indicates the direction (input or output) for the Local Nv. |
| Selector | References an individual network variable, which is stored in a table within the local Neuron chip. |
| Turn Around | |
| Service type | Displays Unacked or Acked. |
| Authenticated | Represents the Authenticated bind service type. |
| Addr Index | Displays the location of the address using a number. |
| Tuning Policy Name | Displays the tuning policy being used. |
Buttons
- New creates a new device record in the database.
- Edit opens the device’s database record for updating.
- TagIt associates metadata, such as location or unique configuration with the object.