Linking and binding using a wire sheet

Although not a manager view, whenever the station is configured as the Lonworks network manager (typical), the wire sheet view of the Lon network (and any child LonDeviceFolder containing Lon devices) is an important view. Here, bindings between Lon devices appear as graphical links (wires), and you can add or delete bindings between devices.

Using the wire sheet is not a strict requirement. You can perform the same operations using right-click commands (on Lon devices) in the Nav tree, such as Link Mark and Link from <LonDeviceName>. However, the wire sheet graphically shows you existing bindings as wires or nubs.

CAUTION: Lon proxy points provide station access to nvs, ncis, and cps for usage in control, display, and various alarm and history schemes (via point extensions). However, for the purpose of sharing nv data among devices, do not link the proxy points in one device directly to the proxy points in another device on the same network. This is a linking misapplication! Instead, link the devices as described in this procedure. Linking the devices also links the network variables associated with each device.

Perform the following steps:

Right-click the Lon network node in the Nav tree and click Views > Wire Sheet
The wire sheet grid opens.
To add a LonPoint to the configuration, open the kitLon palette and drag a LonPoint to the wire sheet, and select the type of SNVT.
Link the out from a control point (elsewhere in the station) to the dynamic slot of the LonPoint, then link the nvo (network variable out) slot of the LonPoint to the nvi (network variable in) on one or more Lon device(s).
The screen capture shows a link being pulled from an nvo of one device to another device.
However you specify a link between Lon devices, the popup Link editor provides nv (for example, SNVT) verification to allow only legitimate links.

This link is still a station-dependent link. In other words, until you perform a Bind or Selective Bind operation from the Lon Link Manager, the station is required for data exchange.
Right-click the Lon network node in the Nav tree and click Views > Lon Link Manager.
Select the link you just created using the wire sheet and click the Bind or Selective Bind buttons.

NOTE: In the Lon Link Manager, a link/binding between two Lon devices appears as an entry row without LocalDev as the value of either srcDevice or targetDevice (whereas, any entry row with a LocalDev value represents a Lon proxy point in the station).

Linking and binding using a wire sheet

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