1 Features and System Configuration
1 - 4
NX-series Analog I/O Units User’s Manual for Analog Input Units and Analog Output Units (W522)
1-2 System Configuration
NX Unit NX-series Analog Input Units and Analog Output Units can be connected to the following Units.
• NX-series CPU Unit
• NX-series Communications Coupler Unit
The following explains the system configuration for each NX Unit connection destination.
The following figure shows a system configuration when a group of NX Units is connected to an
NX-series CPU Unit.
You can connect the EtherCAT Slave Terminal to the built-in EtherCAT port on the CPU Unit. Refer to
1-2-2 System Configuration of Slave Terminals on page 1-5 for details on the system configuration of a
Slave Terminal.
1-2-1 System Configuration in the Case of a CPU Unit
Symbol Item Description
(A) NX-series CPU Unit The Unit that serves as the center of control for a Machine Automation Con-
troller. It executes tasks, refreshes I/O for other Units and slaves, etc. NX Units
can be connected to an NX1P2 CPU Unit.
(B) NX Units The NX Units perform I/O processing with connected external devices. The
NX Units exchange data with the CPU Unit through I/O refreshing. A maximum
of eight NX Units can be connected to an NX1P2 CPU Unit.
(C) End Cover The End Cover is attached to the end of a CPU Rack.
(A) NX-series CPU Unit
EtherCAT Slave Terminal
(D) Support Software
Sysmac Studio
Built-in EtherCAT port
Connect to built-in EtherNet/IP port
(B) NX Units
● CPU Rack
NX1P2-
(C) End Cover
EtherCAT
NX Units
EtherCAT Coupler Unit
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