7.27
Date Code 20100129 Instruction Manual SEL-751A Relay
Communications
SEL ASCII Protocol and Commands
TTL (Time to Live) This field contains the time (in ms) before the next message is
expected.
Code
This text field contains warning or error condition text when appro-
priate that is abbreviated as follows:
Transmit Data
Set Reference
This field represents the DataSetReference (Data Set Reference)
that includes the IED name, LN0 lnClass (Logical Node Class), and
GSEControl datSet (Data Set Name) (e.g., SEL_751A_1/
LLN0$DSet13).
Receive Data Set
Reference
This field represents the datSetRef (Data Set Reference) that
includes the iedName (IED name), ldInst (Logical Device
Instance), LN0 lnClass (Logical Node Class), and datSet (Data Set
Name) (e.g., SEL_751A_1CFG/LLN0$DSet13).
IED Description
Code Abbreviation Explanation
OUT OF SEQUENC Out of sequence error
CONF REV MISMA Configuration Revision mismatch
NEED COMMISSIO Needs Commissioning
TEST MODE Test Mode
MSG CORRUPTED Message Corrupted
TTL EXPIRED Time to live expired
HOST DISABLED Optional code for when the host is dis-
abled or becomes unresponsive after
the GOOSE command has been issued
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