Omron NX-SID Series User Manual

The Safety CPU Unit performs safety process data communications with the Safety I/O Units on the
same Slave Terminal.
Safety process data communications are not performed with
Safety I/O Units on other Slave Terminals
on the EtherNet/IP network.
Here, the Safety CPU Unit operates as the master in the safety process data communications. Mean-
while, the Safety I/O Units operate as slaves in the safety process data communications.
The Communications Coupler Unit relays safety process data communications between a safety mas-
ter unit and a safety slave unit.
Relationship between Master and Slaves during Standard Process
Data Communications
The relationships for standard process data communications are shown in the following figure.
Standard process data communications
Standard
CPU Unit
S
M
Standard master
Standard slave
Communications between NX Units
SSS
M
SSS
M
S
S
Safety
CPU
Unit
Coupler
Unit
Safety Output
Safety Input
Safety
CPU
Unit
Coupler
Unit
Safety Output
Safety Input
Standard output
Standard input
EtherNet/IP
The standard controller performs standard process data communications with the Safety CPU Unit
and the Safety I/O Units on the EtherNet/IP network.
A standard controller cannot output signals to Safety I/O Units
.
Also, the Safety CPU Unit performs standard process data communications with the Standard I/O
Units on the same Slave Terminal.
4 Safety Control Unit Operation
4 - 7
NX-series Safety Control Unit User's Manual (Z930)
4-1 Relationship between Units and Types of Communications
4
4-1-3 Standalone Safety Control System

Omron NX-SID Series Specifications

General

Brand	Omron
Model	NX-SID Series
Category	Controller
Language	English