Internal Bindings

Internal Bindings

The Internal Bindings dialog provides a consolidated view for managing all internal binding settings of a virtual IED’s inputs. It is accessible from the context menu of a virtual IED in the Function Specification Diagram.

Accessing the Dialog

Right-click on a virtual IED in the Function Specification Diagram and select Internal Bindings from the context menu.

The dialog title shows the device role and IED type (e.g. “Internal Bindings : BCU  |  IED Type: 6MD86”). If the virtual IED has a variant, it is also shown.

Overview

The dialog is organized into four tabs:

Specification to IED

The default tab shows a tree of all specified input signals grouped by virtual IED, function, and logical node. Each input signal can have one or more internal binding children that define where the input data is routed inside the IED.

The tree has the following columns:

FinalDestination Types

When adding a new destination with the Add… button, you can choose from three types:

Formulas

The Formula column allows parameterized reference resolution. A formula can reference STS variables that are resolved in the context of the virtual IED. This is useful when the same binding pattern applies across multiple devices but with different concrete addresses.

IED to Specification

The second tab shows the reverse perspective: it lists all ExtRef and InRef objects defined in the actual IED data model, organized by Access Point, Logical Device, and Logical Node. For each ExtRef or InRef, you can assign it to a specified input signal.

This tab is useful when working from an existing IED configuration and wanting to connect its subscription entries to the specification.

GOOSE and SV Supervision

The GOOSE Supervision and SV Supervision tabs manage the assignment of supervision logical nodes (LGOS and LSVS) to subscriptions. Each row represents a subscription and shows:

When automatic supervision allocation is enabled during communication configuration, the assignments appear here and can be reviewed or corrected.

Toolbar Actions

The Specification to IED tab provides the following actions:

• Add… — add a new internal destination to the selected input signal (opens a type chooser, then the appropriate selection dialog)

• Remove — remove the selected FinalDestination

• Remove All — remove all FinalDestinations from the selected input

• Collapse / Expand — navigate the signal tree

• Automatic mapping — attempt to automatically match input signals to available IED destinations

• Import from Excel / Export to Excel — bulk editing of binding assignments via spreadsheet

• Show all virtual IEDs — when enabled, the tree shows input signals from all virtual IEDs assigned to this IED, not just the current one