ABB Relion 630 Series Communication Protocol Manual page 27

1MRS756793 E
630 series
Communication Protocol Manual
Substation Configuration description Language (SCL)
Subnetwor
k
AP
Server
SB1.LD1
Logical
Node
LLN0
LPHD
DAXCBR1
DAXSWI1
DAXSWI1
DASWI2
DAXSWI2
DAXSWI3
DAXSWI3
DAXSWI4
DAXSWI4
DAXSWI5
PWRMMXU1
IEC09000736 V1 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 the IED, 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 with GOOSE. The signal engineering
task is to select the requested signals (DOs) and link them to the client IEDs as
Data
Mod
Beh
Health
Data
NamePlt
Attribute
Pos ctlVal
Loc stVal
OpCnt
BlkOpn
BlkCls Origin
ctlModel
CBOpCap
Control
IEC09000736_1_en.vsd
Section 3
IED
q
t
21