Datasheet
NX series I/O 13
NX-OD4256
IOV
IOG
IOV
IOG
IOV
IOG
IOV
IOG
OUT0
IOG0
IOV2
IOV0
A1 B1
A8 B8
OUT2
IOG2
OUT1
IOG1
IOV3
IOV1
OUT3
IOG3
Two-wire type
Three-wire type
A1 B1
A8 B8
24 VDC
NX-OD3256
A1 B1
A8 B8
Two-wire type
Three-wire type
A1 B1
A8 B8
A1 B1
A8 B8
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOG
IOV
IOG
IOV
IOG
IOV
IOG
OUT0
OUT2
OUT4
IOG0
IOG2
IOG4
OUT1
OUT3
OUT5
IOG1
IOG3
IOG6
OUT6
IOG7
OUT7
IOG5
24 VDC
A1 B1
A8 B8
Two-wire type
Three-wire type
24 VDC
A1 B1
A8 B8
A1 B1
A8 B8
A1 B1
A8 B8
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
IOV
OUT0
OUT4
OUT8
OUT2
OUT6
OUT10
OUT1
OUT5
OUT9
OUT3
OUT7
OUT14
OUT12
OUT15
OUT13
OUT11
IOV
IOG
IOV
IOG
IOV
IOG
IOV
IOG
OUT0 to OUT15
Terminal block
I/O power supply +
I/O power supply
I/O power supply +
I/O power supply
Internal circuits
Terminal wiring
Circuit layout
NX-OD3256
NX-OD3257
NX-OD4256
OUT0 to OUT3
IOV0 to 3
IOG0 to 3
Terminal block
I/O power supply +
I/O power supply
Internal circuits
I/O power supply +
I/O power supply
Short-circuit protection
OUT0 to OUT3
This unit uses a push-pull output circuit.
IOV0 to 3
IOG0 to 3
Terminal block
I/O power supply +
I/O power supply
Internal circuits
Isolation circuit
I/O power supply +
I/O power supply
Drive circuit
OUT0 to OUT7
IOG0 to 7
Terminal block
I/O power supply +
I/O power supply
I/O power supply +
I/O power supply
Internal circuits
Short-circuit protection
NX-OD3257
IOV
IOG
IOV
IOG
IOV
IOG
IOV
IOG
OUT0
IOG0
IOV2
IOV0
A1 B1
A8 B8
OUT2
IOG2
OUT1
IOG1
IOV3
IOV1
OUT3
IOG3
Two-wire type
Three-wire type
A1 B1
A8 B8
24 VDC
NX bus
connector
(left)
NX bus
connector
(right)
NX bus
connector
(left)
NX bus
connector
(right)
NX bus
connector
(left)
NX bus
connector
(right)
NX bus
connector
(left)
NX bus
connector
(right)
Additional I/O
power supply unit
I/O power supply
connection unit
I/O power supply
connection unit
Transistor output
unit
NX-OD5121
Additional I/O
power supply unit
I/O power supply
connection unit
Transistor output
unit
NX-OD4256
Additional I/O
power supply unit
Transistor output
unit
NX-OD3256
Additional I/O
power supply unit
Transistor output
unit
NX-OD3257
Short-circuit
protection
NX-OD4121
A1 B1
A8 B8
Two-wire type
Three-wire type
A1 B1
A8 B8
A1 B1
A8 B8
IOV
IOG
IOV
IOG
IOV
IOG
IOV
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
IOG
OUT0
OUT2
OUT4
IOV0
IOV2
IOV4
OUT1
OUT3
OUT5
IOV1
IOV3
IOV6
OUT6
IOV7
OUT7
IOV5
24 VDC
OUT0 to OUT7
IOV0 to 7
Terminal block
I/O power supply +
I/O power supply
Internal circuits
I/O power supply +
I/O power supply
NX-OD4121
NX bus
connector
(left)
NX bus
connector
(right)
Transistor output
unit
NX-OD4121
Additional I/O
power supply unit
I/O power supply
connection unit
NX-OD5121
NX-OD5121