A-90188E-01 MAINTENANCE 1.Series 16i/18i/21i MAINTENENCE INFORMATION
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1.2.2 LED Indications
The MODBUS/TCP board for the Stand-alone type CNC has the
following LEDs: Four green STATUS LEDs and one red ALARM
LED for indicating the status. Three 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:
□: Off ■: On ☆: Blinking ◊: Don't care
The dashed lines indicate the faceplate.
LED lighting sequence at power on
No. LED indication
4321 MODBUS/TCP board state
1
STATUS
□□□□
Power off
2
STATUS
■■■■
Initial state after power on
3
STATUS
■■■□
MPU initialized.
4
STATUS
■■□□
Firmware downloaded.
5
STATUS
■□□□
Control migration to OS
6
STATUS
□■■■
OS PHASE1
7
STATUS
□■■□
OS PHASE2
8
STATUS
□■□■
OS PHASE3
9
STATUS
□■□□
OS PHASE4
10
STATUS
□□□☆
Startup completed.
The system enters No.10 status when the MODBUS/TCP board starts
up normally. This status is maintained until an error occurs.
CD38V
LED4 (GREEN)
LED3 (GREEN)
LED2 (GREEN)
LED1 (GREEN)
AL M (R ED )
LIL (GREEN)
COL (RED)
COM (GREEN)
BTX (GREEN)
CD38V
LED4 (GREEN)
LED3 (GREEN)
LED2 (GREEN)
LED1 (GREEN)
AL M (R ED )
LIL (GREEN)
COL (RED)
COM (GREEN)
BTX (GREEN)