
B-63322EN-2/01 11. LED INDICATORS
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11.1 OVERVIEW
The customer's board has the LED indicators shown below.
If you ever suspect a malfunction, check the states of these LED
indicators.
1 2 3 4
STATUS¡¡¡¡ ← Green
ALARM ¡¡¡ ← Red
The following descriptions use an empty circle (¡), solid circle (●),
and a star (★) to indicate that the corresponding LED is off, on, or
blinking, respectively.
(1) Normal state and normal end of power-on time processing
STATUS : ●¡¡¡
ALARM : ¡¡¡
(2) If an alarm condition occurs (indicated on the STATUS LED
indicators)
No. STATUS NC status
0 ¡¡¡¡ The power is not on.
2 ¡●¡¡ There is no software in the application side.
There is an error in the task information table.
An optional parameter has not been set.
D ●¡●● DRAM test error.
F
●●●●
The power is on, but the processor has not started.
No. STATUS NC status
A ¡★¡★ ROM parity error on the system side.
B ★★¡★ ROM parity error on the application side.
E ¡★★★ A system alarm condition has occurred.
(3) If an alarm condition occurs (indicated by the ALARM LED
indicators)
No. ALARM NC status
3 ●●¡ SYSEMG condition (an NMI error has occurred).
4 ¡¡● DRAM parity error.
5 ●¡● Failure in the processor core power supply.
(4) Miscellaneous
If there is no system-side software when the customer's board is
installed, or if there is an error in the software, the nine LED
indicators in the CNC side blink, resulting in the CNC being
stopped.