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FX
-16LNK-M MELSEC-I/O LINK REMOTE I/O SYSTEM MASTER BLOCK
2N
Master block
POWER
OPEN LED is
lit.
POWER
POWER
PARITY LED
is lit.
LED status ( : Lit,
Remote I/O unit
A
24
0
8
RUN
1
9
PW
SD
2
A
RUN
RD
3
B
SD
ERR
4
C
RD
SHORT
5
D
ERR
OPEN
6
E
PARITY
7
F
ERROR STATION
24
0
8
RUN
1
9
PW
SD
2
A
RUN
RD
3
B
SD
ERR
4
C
RD
SHORT
5
D
ERR
OPEN
6
E
PARITY
7
F
ERROR STATION
24
0
8
RUN
1
9
PW
SD
2
A
RUN
RD
3
B
SD
ERR
4
C
RD
SHORT
5
D
ERR
OPEN
6
E
PARITY
7
F
ERROR STATION
: Extinguished)
B
C
D
Wiring may be disconnected, a remote
I/O unit may be defective, or power may
be turned off.
PW LEDs on remote I/O units are lit, so
PW
PW
PW
RUN
RUN
RUN
wiring is disconnected in position
SD
SD
SD
RD
RD
RD
ERR
ERR
ERR
Wiring may be disconnected, a remote
I/O unit may be defective, or power may
PW
PW
PW
RUN
be turned off.
RUN
RUN
SD
SD
SD
PW LED on remote I/O unit B is extin-
RD
RD
RD
guished, so power is turned off or
ERR
ERR
ERR
remote I/O unit B is defective.
Remote I/O unit C is defective.
PW
PW
PW
ERR LED on remote I/O unit C is lit, so
RUN
RUN
RUN
this unit cannot receive correctly data
SD
SD
SD
from master block. (It may be caused
RD
RD
RD
by noises.)
ERR
ERR
ERR
Troubleshooting 5
System status
Master
A
B
C
D
5-5
.
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