Subscribing to GOOSE Control Blocks from External References

Introduction

You can configure the IEC61850 server in the 140 NOP 850 00 module to subscribe to published by external s.

The method of subscribing to remote GOOSE data is different for the IEC61850 client and server:

For the IEC61850 server, use the External Reference window to map the data attributes of a remote IED to the data attributes of the local IED. The data attributes of the local IED are updated with changes when the server receives the GOOSE published by remote IED.
For the IEC61850 client, use the Control Block tab of the I/O Mapping window to subscribe to GOOSE data configured in a remote IED. You need to map the related data attributes in I/O mapping so that you can locate the data attributes that are updated after receiving data.

In the External Reference window, the 140 NOP 850 00 module adds the data attributes (DAs) subscribed from the external IED to PLC memory, then updates the values of the subscribed DAs as they change. The 140 NOP 850 00 module performs this update when operating in either normal or simulation mode.

For GOOSE subscriptions in simulation mode, it is possible to control LPHD.sim.stVal to receive or reject GOOSE data attribute for the server. Note that the client does not support simulation mode and will ignore all GOOSE that are marked as simulation.

When the 140 NOP 850 00 module receives a GOOSE update, the relative diagnostic information is collected with dedicated DDT instances of IED_GOOSE.

LGOS is not supported automatically when subscribing to GOOSE, but it is possible to manage LGOS in your PLC application using GOOSE diagnostic information.

Use the External Reference window to:

Create mapping items that associate data attributes of the local 140 NOP 850 00 module to data attributes contained in GOOSE messages published by an external module.
Edit mapping items you previously created.
Remove mapping items you previously created.

Before you can use the External Reference window, you first need to:

Enable the IEC61850 server resident in the 140 NOP 850 00 module.
Create a new server instance for the module.

External GOOSE data reference

Import SCD / ICD button

Delete remote IED button

Mapping table

Target drop area for the creation of a new mapping item

Internal Data Objects filter (for the 140 NOP 850 00 module)

External mapped data item

Internal mapped data item

Mapping Internal Data Attributes to GOOSE External References

Follow these steps to map the internal data attributes (that you want to receive and store external data) to the external data attributes in a GOOSE transmission:

Step	Action
1	In the External panel, click the Import SCD / CID button. The Importing external IED dialog appears.
2	In the Importing external IED dialog, click the ellipsis button. The Open dialog displays.
3	In the Open dialog, navigate to and select an SCD or CID file; then click Open.
4	In the Select IED to Import list, select the IED that publishes the data you want to import, and click OK. NOTE: Because all imported IEDs are managed in the same space, each imported IED needs to have a unique name. The software will not import IEDs with same name as previously imported IED.
5	In the GOOSE list, select the control block that contains the data you want to import. The external reference list – located below the External filtering selections – presents the external references that satisfy the selected filtering criteria.
6	In the External panel, select a data attribute from the external references list, then drag it to the area marked Drag external data object here to create mapping. A row is added to the Mapping table, and the data attribute you added appears on the left side of the newly added mapping item. the right box of the data item in the Mapping table to which you want the external reference mapped. Repeat this step as many times as there are mapping items to populate.
7	In the Internal data panel, use the filtering lists to select the data attribute you want to add to PLC memory. Filtering items include: IED: The read-only name of the module. LDevice: Select an IEC61850 server logical device. LNode: Select a logical node associated with the selected logical device. FC: Select a functional constraint. The data attribute list – located below the filtering selections – presents the data attributes that satisfy the selected filtering criteria.
8	Use your cursor to select a data attribute in the Internal Data Objects data attribute list, and drag it to the right box of the data item in the Mapping table to which you want the internal data item mapped. NOTE: When you select an internal data attribute, it needs to be of the same data type as the data item to which it is mapped. If you attempt to map data items of different types, a message box opens indicating the attempted mapping is not permitted. Repeat this step as many times as there are mapping items to populate.
9	When you finish adding mapping items, Save your edits.

Editing Mapping Items

After a mapping item is created – by adding both an internal data attribute and an external reference – you can edit the item by replacing the internal data attribute.

To edit the internal data attribute, follow these steps:

Step	Action
1	In the Internal Data Objects filter, navigate to the data attribute you want to add.
2	Select the replacement internal data item, and drag it to the right box of a mapping item. The new internal data item overwrites the old one.

Deleting a Mapping Item

To delete an item from the mapping list, select the item in Mapping panel, then click the right mouse button, and select Delete.