Omron NX-SID800 User Manual

1 Overview
1 - 12
NX-series Safety Control Unit User’s Manual (Z930)
1-4 Exchanging Signals between Units
This section describes how signals are exchanged between the Units in the safety control system.
This section describes the relationships between Units and communications between Units in safety
control systems that use EtherCAT Coupler Units and EtherNet/IP Coupler Units.
The section describes the relationships of the Safety CPU Unit, Safety I/O Units, and the Standard CPU
Unit within the communications system, and provides details on communications between the Units
based on the following figure.
*1. You cannot send outputs to the Safety Output Units. You can input the output values.
The safety control system consists of the Safety CPU Unit and Safety I/O Units.
The Safety CPU Unit performs safety controls with the Safety I/O Units through safety process data
communications. (Section (A) in the above figure.)
The Safety CPU Unit can perform standard I/O control with a Standard CPU Unit through standard pro-
cess data communications. (Section (B) in the above figure.)
The Standard CPU Unit can also perform standard process data control with Safety I/O Units, but only
for inputs. (Section (C) in the above figure.)
1-4-1 Relationship between Units and Types of Communications
Safety Control System
Safety CPU Unit
Standard
CPU Unit
Inputs
Safety Input
Units
Safety Output
Units
Inputs
Outputs
Inputs
*1
Safety
process data
communications
Standard process
data communications
(C)
Safety control system
Standard process
data communications
(B)
(A)

Omron NX-SID800 Specifications

General

Brand	Omron
Model	NX-SID800
Category	Controller
Language	English