
B–62075E/04
2. HARDWARE
132
(4)LED display
j :Not lit J :Lit L : Blinking
STATUS LEDs are green. ALARM LEDs are red.
1. LED display transition when the power is turned on (STATUS
LED)
No. LED display NC status
1 STATUS jjjj Power–off
2 STATUS JJJJ State in which the axis CPU is not started
3 STATUS JjjJ Beginning of the activation of the axis CPU
software
4 STATUS jjjJ End of the axis CPU local RAM test
5 STATUS JJJj End of the axis CPU local RAM clear
6 STATUS jJJj Waiting for a response from the main CPU (1)
7 STATUS JjJj Waiting for a response from the main CPU (2)
8 STATUS jjJj Waiting for a response from the main CPU (3)
9 STATUS JJjj Waiting for a response from the digital servo
10 STATUS jJjj Waiting for a response from the main CPU (4)
15 STATUS Jjjj Normal state. The power–on sequence is
ended.
2. LED display when an error occurs (STATUS LED)
No. LED display NC status
1 STATUS Ljjj An error occurred in the DRAM of the axis CPU.
2 STATUS jLjj An unsupported component is installed in the
DRAM of the axis CPU.
3 STATUS jLLj A logical slot setting error occurred.
16 STATUS jJJJ A system error occurred.
3. LED display when an error occurs (ALARM LED)1
No. LED display NC status
2 ALARM jJj SYSFAIL (fault in a module on the F–BUS)
occurred.
3 ALARM JJj A servo alarm occurred.
4 ALARM jjJ SYSEMG (NMI in a module on the F–BUS)
occurred.
5 ALARM JjJ A bus error occurred
(F–BUS, servo, spindle module).
6 ALARM jJJ A parity alarm occurred in the DRAM module.