Omron SYSMAC NX-CIF Series User Manual page 42

1 Features and System Configuration
Letter
(A) NX-series CPU Unit
(B)
NX Units
(C) End Cover
Sysmac Studio 
(D)
Support Software
(E) CIF Unit
(F) Serial communications
device
*1. For whether an NX Unit can be connected to the CPU Unit, refer to the version information in the user's manual
for the NX Unit.
1 - 4
Item
This is the central control Unit in the Machine Automation Controller. It exe-
cutes tasks and performs I/O refreshing and other processing for other Units
and slaves. NX Units can be connected to the NX1P2 CPU Units.
The NX Units perform I/O processing with connected external devices. NX
*1
Units exchange data with the CPU Unit during I/O refreshing. You can con-
nect up to eight NX Units to an NX1P2 CPU Unit.
The End Cover is mounted to the end of the CPU Rack.
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 mak-
ing a connection to a built-in EtherNet/IP port.
A CIF Unit is a type of NX Unit that performs serial communications with an
external serial communications device.
This external device performs serial communications for the application.
Description
NX-series Communications Interface Units User's Manual (W540)