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2 System Configuration
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
2-1 Basic System Configuration
2
2-1-2 NX Unit Configuration
NX-series NX1P2 CPU Units
The Unit that serves as the center of control for a Machine Automation Controller. It executes tasks,
refreshes I/O for other Units and slaves, etc. In the NX-series, this type of Units are called NX1P2
CPU Units.
Refer to 3-1 CPU Units on page 3-2 for the models and specifications of individual NX-series NX1P2
CPU Units.
SD Memory Card
With the NX-series CPU NX1P2 Unit, various data can be saved, backed up, restored and com-
pared using the SD Memory Card.
Refer to 3-2 SD Memory Cards on page 3-19 for the models and specifications of individual SD
Memory Card.
NX Unit
The NX Units perform I/O processing with connected external devices. These Units are NX-series
NX- Units.
Up to eight NX Units can be connected to the CPU Unit.
Refer to A-4 Support Functions of the CPU Units and Restrictions on the NX Units on page A-9 for
information such as restrictions on the NX Units.
Precautions for Correct Use
You cannot mount NX-series Safety Control Units on the CPU Unit and use them. Use
NX-series Safety Control Units as a subsystem on EtherCAT.
End Cover
A cover to protect the NX unit and CPU Unit. This is provided with the CPU Unit. The model number
is NX-END02.
Option Board
The Option Boards are used to add the serial communications function or analog I/O function to the
CPU Unit.
The Option Boards are mounted to the option board slot on the CPU Unit. The number of Option
Boards that can be mounted to the CPU Unit depends on the number of slots on the CPU Unit.
Refer to 1-2 Specifications on page 1-8 for the number of the option board slots on the CPU Unit.
Refer to 3-3 Serial Communications Option Board on page 3-20 or 3-4 Analog I/O Option Board on
page 3-25 for the models and specifications of the Option Boards.
Recommended Communications Cables for EtherCAT and EtherNet/IP
EtherCAT communications are performed in accordance with the 100BASE-TX standard. Refer to
the NJ/NX-series CPU Unit Built-in EtherCAT Port User’s Manual (Cat. No. W505) for recom-
mended cables.
EtherNet/IP communications are performed in accordance with the 100BASE-TX or 10BASE-T
standard. Refer to the NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (Cat. No.
W506) for recommended cables.
Configuration Units
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