(E) Support Software
*1
(F) ESI files
.xml
.xml
*1. The connection method for the Support Software depends on the model of the CPU Unit or
Industrial PC.
(A) EtherCAT master
NJ/NX-series CPU Unit, NY-series Industrial PC or
master from another manufacturer
EtherCAT port
(E) Support Software
(G) Communications cable
Ethernet cables
Peripheral USB port
• EtherCAT Slave Terminal
(F) ESI files
Connection to peripheral USB
p
ort on EtherCAT Coupler Unit
(B) NX-series
EtherCAT Coupler Unit
NX-ECC20¨
(D) End Cover
(C) NX Units
Let-
ter
Item Description
(A)
EtherCAT master
*1
The EtherCAT master manages the network, monitors the status of slaves,
and exchanges I/O data with slaves.
(B) EtherCAT Coupler Unit The EtherCAT Coupler Unit serves as an interface for process data communi-
cations on the EtherCA
T network between the NX Units and the EtherCA
T
master.
The I/O data for the NX Units is accumulated in the EtherCAT Coupler Unit
and then all of the data is exchanged with the EtherCAT master at the same
time.
The EtherCAT Coupler Unit can also perform message communications (SDO
communications) with the EtherCAT master.
(C)
NX Units
*2
The NX Units perform I/O processing with connected external devices.
The NX Units perform process data communications with the EtherCAT mas-
ter through the EtherCA
T Coupler Unit.
(D) End Cover The End Cover is attached to the end of the Slave Terminal.
(E)
Support Software
*3
The Support Software runs on a personal computer and it is used to configure
the EtherCAT network and EtherCA
T Slave Terminal, and to program, moni-
tor, and troubleshoot the Controllers.
1 Features and System Configuration
1-6
NX-series System Units User's Manual (W523)
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