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FX
-16LNK-M MELSEC-I/O LINK REMOTE I/O SYSTEM MASTER BLOCK
2N
LED indication and terminal block
LED
POWER
24V
0
8
RUN
1
9
SD
2
A
RD
3
B
ERR
4
C
SHORT
5
D
OPEN
6
E
PARITY
7
F
ERROR STATION
Name
24 V
RUN (*1)
SD
RD (*2)
SHORT Lit
OPEN
ERR.
PARITY Lit
ERROR
STATION 0 to F
Status
Supply voltage of power (24V DC) supplied from out-
Lit
side is normal.
Extin-
Supply voltage of power (24V DC) supplied from out-
guished
side is insufficient.
SHORT, OPEN and PARITY errors have not occurred
Lit
at all in any on-line station.
Extin-
SHORT, OPEN or PARITY error has occurred consec-
guished
utively in six scans or more.
Lit
Data is being sent.
Lit
Data is being received.
DATA and DG are short-circuited.
When all data is adjacent inversion data (00) even in
one on-line remote station, it is regarded as discon-
Lit
nection of transmission path, defect in remote I/O sta-
tion or OFF of 24V DC power, and OPEN LED is lit.
When data is adjacent inversion data or parity check
error data even in one on-line remote station, it is
regarded as an error and PARITY LED is lit.
When an open error has occurred, it is not regarded
as a parity error.
When an open or parity error has occurred six times
consecutively (X data is cleared at the same time.) or
a status error has occurred in an online remote sta-
Lit
tion, corresponding LED is lit (A fuse blowout error is
issued at the same time.).
When error status is cleared, LED is distinguished.
Operation 4
Description
4-4
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