Date Code 20001006 Compressed ASCII Commands E-9
SEL-351 Instruction Manual
where: xxxx are the data values corresponding to the first line labels and
yyyy is the 4-byte hex ASCII representation of the checksum.
If the history buffer is empty, the relay responds:
<STX>"No Data Available","0668"<CR><ETX>
CEVENT COMMAND – SEL-351
Display event report in compressed ASCII format by sending:
CEV [n Sx Ly L R C] (parameters in [ ] are optional)
where: n event number (1 to 30; see Table 12.1)
Sx x samples per cycle (4 or 16); defaults to 4
If Sx parameter is present, it overrides the L parameter
Ly y cycles event report length (1 to LER) for filtered event reports,
(1 to LER+1) for raw event reports, defaults to 15 if not specified
L 16 samples per cycle; overridden by the Sx parameter, if present
R specifies raw (unfiltered) data; defaults to 16 samples per cycle unless
overridden by the Sx parameter. Defaults to 16 cycles in length unless
overridden with the Ly parameter.
C specifies 16 samples per cycle (unless overridden by the Sx parameter),
15 cycle length (unless overridden by the Ly parameter)
The relay responds to the CEV command with the nth event report as shown below. Items in
italics will be replaced with the actual relay data (wye-connected voltages shown).
<STX>"FID","yyyy"<CR>
"Relay FID string","yyyy"<CR>
"MONTH","DAY","YEAR","HOUR","MIN","SEC","MSEC","yyyy"<CR>
xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,"yyyy"<CR>
"FREQ","SAM/CYC_A","SAM/CYC_D","NUM_OF_CYC","EVENT",
"LOCATION","SHOT","TARGETS","IA","IB","IC","IN","IG","3I2","yyyy"<CR>
xxxx,xxxx,xxxx,xxxx,"xxxx",xxxx,xxxx,"xxxx",xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,
"yyyy"<CR>
"IA","IB","IC","IN","IG","VA","VB","VC","VS","VDC","FREQ","TRIG",
"Names of elements in the relay word separated by spaces ","yyyy"<CR>
xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,xxxx,z,"HEX-ASCII Relay
Word","yyyy"<CR>
"SETTINGS","yyyy"<CR>
"Relay group, global, and logic settings as displayed with the showset command (surrounded
by quotes)","yyyy"<CR><ETX>
where: xxxx are the data values corresponding to the line labels.
yyyy is the 4-byte hex ASCII representation of the checksum.
FREQ is the power system frequency at the trigger instant.
Courtesy of NationalSwitchgear.com
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