Schweitzer Engineering Laboratories SEL-749M - Table 7.24 HISTORY Command; Table 7.25 IDENTIFICATION Command; Table 7.26 IRI Command

7.16
SEL-749M Relay Instruction Manual Date Code 20080918
Communications
SEL ASCII Protocol Details
HISTORY Command
Use the HIS command to view a list of one-line descriptions of relay events or
clear the list (and corresponding event reports) from nonvolatile memory.
For more information on event reports, see Section 9: Analyzing Events.
IDENTIFICATION Command
Use the ID command to extract device identification codes.
IRI Command
IRI directs the relay to read the demodulated IRIG-B time code at the serial
port or IRIG-B input.
To force the relay to synchronize to IRIG-B, enter the following command:
=>IRI <Enter>
If the relay successfully synchronizes to IRIG, it sends the following header
and access level prompt:
Table 7.23 FILE Command
Command Description Access Level
FIL DIR Return a list of files. 1
FIL READ
filename
Transfer settings file filename from the relay to
the PC.
1
FIL WRITE
filename
Transfer settings file filename from the PC to the
relay.
2
FIL SHOW
filename
Filename 1 displays contents of the file filename.1
Ta b l e 7. 24 H I STO RY Com m a nd
Command Description Access Level
HIS Return event histories with the oldest at the bottom
of the list and the most recent at the top of the list.
1
HIS n Return event histories with the oldest at the bottom
of the list and the most recent at the top of the list,
beginning at event n.
1
HIS C Clear/reset the event history and all corresponding
event reports from nonvolatile memory.
1
Table 7.25 IDENTIFICATION Command
Command Description Access Level
ID Return a list of device identification codes. 0
Ta b l e 7. 26 I R I Com m an d
Command Description Access Level
IRI Force synchronization of internal control clock to
IRIG-B time-code input.
1
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