Safety
CPU
Unit
Coupler
Unit
Coupler
Unit
Safety Control System
Safety Control System in EtherNet/IP Slave Terminals
Slave Terminal Slave Terminal
Safety Output
Safety Input
Safety Output
Safety Input
Safety
CPU
Unit
Coupler
Unit
The Safety CPU Unit
performs safety process data
communications with the
Safety I/O Units in the Slave
Terminal.
Standard
CPU Unit
You can control Safety I/O Units that are mounted to the same Slave Terminal as the Safety CPU Unit
You cannot use the EtherNet/IP network to control the operation of Safety I/O Units that are mounted
to other Slave T
erminals. You can use only one Safety CPU Unit on each Slave Terminal.
l
Applicable NX-series EtherNet/IP Coupler Units
Refer to A-17 Version Information on page A - 105 for the model numbers and unit versions of the
applicable NX-series EtherNet/IP Coupler Units.
1-2-4
Types of Safety Control Unit
This section provides the Classification of NX-series Safety Control Unit.
Unit classification Introduction
Safety CPU Unit This Unit has safety control functions.
It operates as an NX Unit.
It also operates as an FSoE master.
It operates as a CIP-Safety-on-EtherNet/IP device.
Safety I/O Units These Units have safety input functions or safety output functions.
They operate as NX Units.
These Units operate as FSoE slaves.
Safety Input Unit
These Units have safety input functions.
Safety Output Unit These Units have Safety Output functions.
Refer to Section 2 Specifications on page
2 - 1 for details on individual Units.
1 Overview
1 - 11
NX-series Safety Control Unit User's Manual (Z930)
1-2 System Configuration and
Configuration Devices
1
1-2-4 Types of Safety Control Unit