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FX
-16LNK-M MELSEC-I/O LINK REMOTE I/O SYSTEM MASTER BLOCK
2N
The table below shows I/O assignment to remote I/O units in the system shown on the left.
(X or Y) 20
X
Y
Station No.
0
A
: A bold line frame shows one remote unit.
Vacant: A vacant No. is occupied by a remote I/O unit.
•
Units A, G and H are mixed I/O type units having four input points and four output points. Though one
station occupies four points usually, one mixed I/O type unit occupies eight points.
•
Unit C is a mixed I/O type unit having two input points and two output points.
Two input points and two output points are vacant.
•
Oter units are remote I/O units dedicated to input or output.
In a unit dedicated to input, output points are vacant. In a unit dedicated to output, input points are
vacant.
•
When there is a vacant station No., for example, when the station No. 8 is vacant (in which no unit is con-
nected) in the system shown on the left, four input points and four output points are vacant.
After the unit H (station No. 9), input points from X074 and output points from Y074 are available without
regard to existence of the station No. 8.
•
When extension units or extension blocks are connected after the master unit in the system on the left,
input points from X120 and output points from Y120 are available.
•
When "8EX" (extension block dedicated to input) is omitted in the system on the left, input points from
X010 are assigned to the input side (X) of a remote I/O unit.
30
40
50
1
2
3
4
5
6
B
C
D
E
F
60
70
100
7
8
9
A
B
C
I
G
H
J
Operation 4
110
D
E
F
L
K
4-13
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