ABB SAM600-IO Protocol Manual page 25

1MRK 511 440-UEN A
Switchgear control unit SAM600-IO Version 2.2 IEC
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
IEC17000139 V1 EN-US
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 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 select the requested signals (DOs) and link them to the client
Data
Mod
Beh
Health
Data
NamePlt
Attribute
Pos ctlVal
Loc stVal
OpCnt q
BlkOpn
BlkCls
Origin
CBOpCap ctlModel
Control
IEC17000139-1-en.vsd
Section 3
IED
t
19