
B-63644EN/02 VI. MAINTENANCE 2.Series 16i/18i/21i, Power Mate i MAINTENENCE INFORMATION
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STATUS LED indications if an error occurs (LEDs L1 through L4)
If an error occurs, the LEDs repeatedly flash "LONG" then "SHORT."
(For "LONG," the LED lights for a long time. For "SHORT," the LED
lights for a short time.)
STATUS LED
indication
No.
LONG
1234
SHORT
1234
Fast Ethernet/Fast data server state
1
¡l
¡l
l¡
l¡
SDRAM paruty alarm
2
¡l
l¡
¡¡
¡¡
General invalid instruction
3
¡l
l¡
l¡
¡¡
Failure caused by
Fast data server
Invalid slot instruction
4
¡l
¡l
l¡
¡¡
Failure caused by
another board
NMI of another module
NOTE
If an error, indicated by repeatedly flashing a LONG
and SHORT combination other than the above,
occurs, contact FANUC.
ALARM LED indications if an error occurs
No.
LED indication
123
Data server board state
1 ¨nn A bus error occurred on the Fast data server.
2 ¨nn Parity error occurred in memory.
LED indications related to communication status
Communication status (LEDs L5 through L8)
No. LED indication Communication status
1 là
àà
Lights when a connection is made with 100BASE-TX.
2 àà
là
Lights when data is received.
3 àà
àl
Lights when data is received.
4 àl
àà
Lights when the Fast data server is successfully
connected to the hub.
Communication status (COL LED)
No. LED indication Communication status
1 l Lights if a data collision occurs.
NOTE
COL:
This LED lights frequently if there is excessive traffic
on the communication line or if there is excessive
peripheral electrical noise.