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1 Features and System Configuration
NX-series Digital I/O Unit User’s Manual (W521)
1-2 System Configuration
1
1-2-2 System Configuration of Slave Terminals
A building-block remote I/O slave provided with a group of NX Units connected to a Communications
Coupler Unit is generically called a Slave Terminal.
The NX Units can be flexibly combined with a Communications Coupler Unit to achieve the optimum
remote I/O slave for the application with less wiring, less work, and less space.
The following figure shows an example of the system configuration when an EtherCAT Coupler Unit is
used as a Communications Coupler Unit.
Refer to the user's manual for the connected Communications Coupler Unit for details on how to config-
ure the system when any other type of Communications Coupler Unit is used.
(C) End Cover The End Cover is attached to the end of a CPU Rack.
(D) Support Software
(Sysmac Studio)
A computer software application for setting, programming, debugging, and
troubleshooting NJ/NX/NY-series Controllers.
For an NX1P2 CPU Unit, this application performs setting operation by making
a connection to a built-in EtherNet/IP port.
1-2-2 System Configuration of Slave Terminals
Sym-
bol
Item Description
(A) EtherCAT master
NJ/NX-series CPU Unit, NY-series Industrial PC,
or master from another manufacturer
(G) Communications cable
Ethernet cables
(B) NX Series
EtherCAT Coupler Unit
NX-ECC20
• EtherCAT Slave Terminal
(E) Support Software
*1
(E) Support Software
(F) ESI files
(D) End Cover
(C) NX Units
EtherCAT port
(F) ESI files
Peripheral USB port
.xml
.xml
Connection to peripheral USB
port on EtherCAT Coupler Unit
*1. The connection method for the Support Software depends on the model of the CPU Unit or Industrial PC.
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