
9.2. LED Status List
Operation Condition LED Status
No settings made by PC After “POWER” is lighted, “PASS”, “ID
ERR”, and “FAIL” will blink one time in
order, then ”PASS”, “ID ERR”,
and ”FAIL” will go out, then "_","_" is
displayed in the center display.
Serial data mode is set After “Power” is lighted, “PASS” “ID
ERR” and “FAIL” will blink one time in
order, then “PASS” and “ID ERR” will
be lighted.
The user’s program checksum lower 1
byte will be displayed in the center
display.
“Multi Data Mode” is set After “Power” is lighted, “PASS”, “ID
ERR” and “FAIL” will blink one time in
order, then “PASS” and “ID ERR” will
be lighted.
On the center display, “P”, “1” through
“P”,“4” are displayed then the user’s
program checksum lower 1 byte will be
displayed.
Internal memory is damaged “PASS”, “ID ERR” and “FAIL” will
blink one time in order, then “PASS” and
“ID ERR” will be lighted. On the center
display, “M”, “E” are displayed.
Power ON
Executing programming “PASS” blinks and nothing is displayed
on the center display.
PASS “PASS” only is lighted and the user’s
program checksum lower 1 byte will be
displayed on the center display.
ID Error “ID ERR” only is lighted and the user’s
program checksum lower 1 byte will be
displayed on the center display.
Mode Entry Error “ID ERR” and “FAIL” are lighted and
the user’s program checksum lower 1
byte will be displayed on the center
display.
Internal memory is damaged “PASS” “ID ERR” and “FAIL” are all
lighted, and “M”, “E” are displayed on
the center display.
Other programming error “FAIL” only is lighted and the user’s
program checksum lower 1 byte will be
displayed on the center display.
Programming
Executing main unit
downloading
“PASS” “ID ERR” and “FAIL” go out
and nothing is displayed on the center
display.
Main unit downloading
complete
“PASS” and “ID ERR” will be lighted
and the user’s program checksum lower
1 byte will be displayed on the center
display.
Downloading
Main unit memory initializing “ID ERR” goes out, “PASS” and “FAIL”
will blink alternatively and nothing is
displayed on the center display.
Main unit memory
initialization complete
“PASS”,“ID ERR” and “FAIL” all go out
and "_","_" is displayed on the center
display.
Main unit memory
initializing
Firmware update waiting “PASS” and ”FAIL” are lighted, “ID
ERR” goes out and nothing is displayed
on the center display.
Serial Flash Programmer[S550-SFWv3] Operation Manual 110
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