Configuration Units
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NX-series NX502 CPU Unit
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 is called NX502
CPU Unit.
Refer to 3-1 CPU Units on page
3-2 for the models and specifications of individual NX-series
NX502 CPU Unit.
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End Cover
A cover to protect the NX Unit and CPU Unit. This is provided with the CPU Unit. The model num-
ber is NX-END02.
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NX Unit
The NX Units perform I/O processing with connected external devices. These Units are NX-series
NX-££££££ Units.
Up to 63 NX Units can be connected to the CPU Unit.
Refer to A-5 Support Functions of the CPU Units and Restrictions on the NX Units on page A-8
for information such as restrictions on the NX Units.
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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 recommend-
ed cables.
EtherNet/IP communications are performed in accordance with the 1000BASE-T, 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.
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SD Memory Card
With the NX-series NX502 CPU 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 3-14 for the models and specifications of individual SD
Memory Cards.
2-1-3
X Bus Unit Configuration
The following shows the configuration of X Bus Units.
CPU Rack
The CPU Rack consists of an NX-series NX502 CPU Unit and X Bus Units.
Up to four X Bus Units can be connected.
2 System Configuration
2-5
NX-series NX502 CPU Unit Hardware User's Manual (W629)
2-1 Basic System Configuration
2
2-1-3 X Bus Unit Configuration
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