
B–63525EN/02
4. STAND–ALONE TYPE i SERIES HARDWARE
311
D Status LED display when an error occurs (green)
The status LEDs alternately display the LONG and SHORT patterns.
The LONG pattern is held longer than the SHORT pattern.
STATUS LED
indication
No.
LONG
4321
SHORT
4321
Ethernet/data server board state
1 Jjjj jjjJ
Failure caused by this
System reset
2 Jjjj jjJj
board.
Machine check
3 JJjj jjjJ DRAM parity alarm
4 JJjj jjJj Failure caused by anoth-
er 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.
D Alarm LED display (red) when an alarm occurs
State
LEDB Lit when a parity alarm occurs in the main memory on this board.
D Communication status LED display (red)
LED5 (TX) Lit when data is sended.
LED6 (RX) Lit when data is received.
LEDA (COL) Lit when a data collision occurs.
NOTE
LEDA (COL) is frequently lit if the traffic of Ethernet
communication is large or if the peripheral noise is large.
Item Code
DeviceNet board A20B–8100–0491
4.4.10
DeviceNet Board
D Specifications