
2.Series 16i/18i/21i, Power Mate i MAINTENENCE INFORMATION VI. MAINTENANCE B-63644EN/02
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2.1.2 LED Indications
The Fast Ethernet board for Series 15i-B incorporates the following
LEDs: Four green STATUS LEDs and one red ALARM LED for
indicating the status. Two green LEDs and one red LED for indicating
the communication status. The figure below shows the locations of
these LEDs. The table below explains the LED lighting states.
In the following explanations, the LED lighting states are expressed as
follows:
o: Off n: On ¶: Blinking à: Don't care
CD38R
LED4 (Green)
LED3 (Green)
LED2 (Green)
LED1 (Green)
ALM (Red)
LIL (Green)
COL (Red)
COM (Green)
BTX (Green)
The dashed lines indicate the faceplate.
LED lighting sequence at power on
No. LED indication 1234 Fast Ethernet/Fast data server state
1 STATUS oooo Power off
2 STATUS nnnn Initial state after power on
3 STATUS nnno MPU initialized.
4 STATUS nnoo Firmware downloaded.
5 STATUS nooo Control migration to OS
6 STATUS onnn OS PHASE1
7 STATUS onno OS PHASE2
8 STATUS onon OS PHASE3
9 STATUS onoo OS PHASE4
10 STATUS ooo¶ Startup completed.
The system enters the No.10 status when the Fast Ethernet/Fast data
server starts normally. This status is maintained until an error occurs.