ExtRef (-6)
- Jakob Vogelsang
An external reference as an element that allows to specify inputs to an IED. This inputs can be specified to be receive data served by a GOOSE, a sampled values stream SMV, a Report or through Polling Poll. To be able to do that this element has a set of attributes of four groups:
Data source attributes
attribute name | description |
|---|---|
iedName | The name attribute of the IED element the data is hosted in |
ldInst | The inst attribute of the LDevice element the data is hosted in |
prefix | The prefix attribute of the LN or LN0 element the data is stored in |
lnClass | The lnClass attribute of the LN or LN0 element the data is stored in |
lnInst | The inst attribute of the LN or LN0 element the data is stored in |
doName | A concatenation of data object pointing to the data. E.g. |
daName | A concatenation of the data object pointing to the data. E.g. |
Control block attributes
attribute name | description |
|---|---|
srcLDInst | The inst attribute of the LDevice element the source control block is allocated |
srcPrefix | The prefix attribute of the LN or LN0 element, the source control block is allocated |
srcLNClass | The lnClass attribute of the LN or LN0 element, the source control block is allocated |
srcLNInst | The inst attribute of the LN or LN0 element, the source control block is allocated |
srcCBName | The name of the source control block |
serviceType | Report, GOOSE, SMV, Poll (polling does not have srcxxx attributes) |
Internal reference attribute
Allows to link the input to an internal functionality intAddr. When this element is set before system configuration we are talking about the later binding concept.
Input restriction (only with later binding)
attribute name | description |
|---|---|
pLN | The logical node class the data can be from |
pDO | The data object the data is from (must be translated to a CDC) |
pDA | The bType the data can be from |
pServT | The service type the data can be send with |
As a typical example for the current input of a sampled value stream, this would look like this:
<ExtRef iedName="AA1E1Q02MU" ldInst="MU01" prefix="I01A" lnClass="TCTR" lnInst="1" doName="Amp" daName="instMag.i" intAddr="01-0C-CD-04-00-20,4002,1,LD0.SMVLSVS1.Beh.ch4,1,0,LD0.SMVLSVS1,uniqueID" serviceType="SMV" srcLDInst="MU01" srcCBName="MSVCB01" pLN="TCTR" pDO="AmpSv" pDA="instMag.i"/>