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Inputs and Outputs
Digital I/O
Unit
Connec-
tor-Terminal
Block Con-
version Unit
Connecting
Cable
L
L
L
L
12
L
to
24
L
VDC
L
L
COM (0V)
Connection
diagram
24
VDC
COM
Note 1. The polarity for input power supply connections
indicated with dotted lines (- - - - -) can be con-
nected in either direction.
2. The COM terminals and +V terminals are inter-
nally connected inside the Unit, but they must all
be wired.
NX-series Digital I/O Unit User's Manual (W521)
NX-MD6121-5
XW2D-20G6
XW2Z-
X
CN1
(OUT)
00
L
B10
08
A10
01
B9
L
09
A9
02
L
B8
10
A8
03
L
B7
11
12
A7
04
to
B6
L
12
24
A6
VDC
05
L
B5
13
A5
06
L
B4
14
A4
07 L
B3
15
A3
COM (0V)
B2
A2
+V
B1
+V
A1
(IN)
CN2
00
B10
08
A10
01
B9
09
A9
02
B8
10
A8
03
B7
11
A7
24
04
B6
VDC
12
A6
05
B5
13
A5
06
B4
14
A4
07
B3
15
A3
COM
B2
A2
B1
NC
NC
A1
Digital I/O
Unit
Connec-
tor-Terminal
Block Con-
version Unit
Connecting
Cable
L
L
L
L
L
L
L
L
Connection
diagram
24
VDC
Note 1. The polarity for input power supply connections
indicated with dotted lines (- - - - -) can be con-
nected in either direction.
2. The COM terminals and +V terminals are inter-
nally connected inside the Unit, but they must all
be wired.
Appendices
NX-MD6121-5
XW2R-J20G-T
XW2Z-
X
CN1 (OUT)
00
B10
08
L
A10
01
B9
09
L
A9
02
B8
10
L
A8
03
B7
11
L
A7
04
B6
12
L
A6
05
B5
13
L
A5
06
B4
14
L
A4
07
B3
15
L
A3
COM
B2
COM
A2
+V
B1
+V
A1
12 to
24
VDC
CN2
(IN)
00
B10
08
A10
01
B9
09
A9
02
B8
10
A8
03
B7
11
A7
04
B6
12
A6
05
B5
13
A5
06
B4
14
A4
07
B3
15
A3
COM
B2
COM
A2
NC
B1
A1
NC
A - 123
A
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Troubleshooting
