ABB Relion 650 series ANSI Manual page 35

1MRK 511 281-UUS A
650 series ANSI
Communication protocol manual
Substation Configuration description Language (SCL)
Subnetwork
AP
Server
SB1.LD0
Logical
Node
LLN0
LPHD
SXCBR1
SCSWI1
SXSWI1
SCSWI2
SXSWI2
SCSWI3
SXSWI3
SCSWI4
SXSWI4
SCSWI5
CVMMXU1
IEC06000104 V2 EN
Figure 4: Organization of LDs, LNs, DOs and DAs in an IED
• A server represents the communication interface to the subnetwork (Ethernet).
• One or more logical device(s) (LD) are connected to a server.
• A set of logical nodes belong to a LD.
• The LN LLN0 is a special logical node per LD and contains for example the data sets,
the various control blocks, inputs (from GOOSE messages). In IED 650 series, the
data sets and the control blocks shall be located to LD0.
• The LN LPHD is a special logical node per LD and contains data objects that describe
the status of the physical device (the IED)
• Each logical node represents a function and contains a number of data objects (DO)
• Each DO includes a number of data attributes (DA)
The data objects represent information signals that may be routed to station level IEDs or
to other bay IEDs that are communicating via GOOSE. The signal engineering task is to
Data
Mod
Beh
Health
Data
NamePlt
Attribute
Pos ctlVal
Loc stVal
OpCnt q
BlkOpn t
BlkCls
Origin
ctlModel
CBOpCap
Control
en06000104.vsd
Section 3
IED
29