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1 Overview
NX-series Safety Control Unit User’s Manual (Z930)
1-2 System Configuration and
Configuration Devices
1
1-2-1 Safety Control System Configuration on EtherCAT
You can also mount just a Safety CPU Unit to an EtherCAT Coupler Unit without mounting Safety I/O
Units, as shown in the following figure. Standard I/O Units
*1
can also be mounted in the same Slave
Terminal, but they cannot be controlled by the Safety CPU Unit.
*1. This refers to NX Units used for standard control, such as Digital Input Units and Digital Output Units.
Refer to the NX-series EtherCAT Coupler Unit User’s Manual (Cat. No. W519) for information on Ether-
CAT network configurations.
Applicable NJ/NX-series CPU Units and NX-series EtherCAT Coupler Unit
Refer to A-15 Version Information on page A-87 for the model numbers and unit versions of the
NJ/NX-series CPU Units and the NX-series EtherCAT Coupler Units that can be used together.
Precautions for Correct Use
If you use an NX-series CPU Unit, you cannot set both the priority-5 periodic task and another
task for an EtherCAT Coupler Unit that contains a Safety Control Unit.
Refer to the NX-series EtherCAT Coupler Unit User’s Manual (Cat. No. W519) for details on
task settings.
EtherCAT master
Safety
CPU
Unit
NJ/NX-series
CPU Unit
Coupler
Unit
Safety Output
Safety Input
Safety Output
Safety Input
Coupler
Unit
Coupler
Unit
Digital Output
Digital Input
EtherCAT
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