
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
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 ooon nooo SDRAM paruty alarm
2 ooon onoo General invalid instruction
3 oonn nooo
Failure caused by
this board
Invalid slot instruction
4 oonn onoo
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 Fast Ethernet/Fast data server state
1 ALM n Parity error occurred in memory.
LED indications related to communication status
No. LED indication Communication status
1COM n Lights when data is sent or received.
2LIL n Lights when the Fast Ethernet/Fast data server is
successfully connected to the hub.
3COL n Lights if a data collision occurs.
4BTX n Lights when a connection is made with 100BASE-TX.
NOTE
LIL :
Communication is not performed while this LED is
not lit. A probable reason for this is that the Fast
Ethernet/Fast data server is not properly
connected to the hub, or that the hub is off. This
LED should be lit at all times while the Fast
Ethernet/Fast data server is properly connected to
the hub.
COL :
This LED lights frequently if there is excessive
traffic on the communication line or if there is
excessive peripheral electrical noise.