10. Alarm display/output
Item
LCD
Measuring unit is
not connected or
c o n n e c t i o n h a s
been cut.
Measuring unit
speed over.
Counter unit
speed over
Overflow
Sixth digit is F
(Note) When the output data format is the initial setting
Note
If the alarm is again displayed/output after solving the problem
Has the measuring unit or its spindle received some strong shock?
Try replacing with the measuring unit used for the other channel.
LT20A / LT30 Series
Output
BCD
I/O connectors
∗E
Alarm terminal is
C R L F
All "H"
"H"
(∗ is A or B.)
∗E
C R L F
Alarm terminal is
All "H"
"H"
(∗ is A or B.)
∗MFXX.XXX
True logic: sixth
digits are all "H".
(∗ is A or B, M is a space
—
False logic: sixth
or a minus sign, X is a
digits are all "L".
numeral.)
. See P39, 40 for other formats.
Cause
(Note)
RS-232C
output.
The measuring unit was
exchanged with the power on.
M e a s u r i n g unit i s n o t
connected or connection
has been cut
T h e m e a s u r i n g u n i t' s
s p i n d l e e x c e e d e d t h e
maximum response speed.
output.
T h e
c o u n t e r
maximum response speed
has been exceeded.
C R L F
output.
Value exceeded 6 digits.
Solution
Reset
F i x p r o b l e m a n d
reset.
Reset
u n i t ' s
Reset
Limit input to 6 digits
and reset.
41
(E)