Appendices
A - 8
NX-series Position Interface Units User’s Manual (W524)
Circuit layout
Encoder Input and External Inputs
Installation orientation
and restrictions
Installation orientation: 6 possible orientations
Restrictions: There are no restrictions.
Terminal connection
diagram
Failure detection None Protection None
*1. The I/O refreshing method is automatically set according to the connected Communications Coupler Unit and CPU Unit.
A, B, Z
I0 to I2
IOG
Current limiter
IOV
I/O power supply +
I/O power supply
−
I/O power supply +
I/O power supply
−
Terminal block
Left-side
NX bus
connector
Right-side
NX bus
connector
Inter-
nal
cir-
cuits
A
Z
IOV
IOG
I0
I2
B
NC
IOV
IOG
I1
NC
IOG IOG
IOV IOV
Sensor 1
Sensor 2
Sensor 3
Encoder
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