Omron NX-SID800 User Manual

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1 Overview
NX-series Safety Control Unit User’s Manual (Z930)
1-4 Exchanging Signals
between Units
1
1-4-2 I/O System for Safety I/O Units
 Relationships for Standard Process Data Communications
The relationships for standard process data communications are shown in the following figure.
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.
This section describes the I/O for the Safety CPU Unit and Safety I/O Units.
When the Safety CPU Unit exchanges signals with Safety I/O Units and other external devices, it does
so through logical interfaces that are called I/O ports.
I/O ports are created automatically when you create the control configuration for safety controls on the
Sysmac Studio and set up the safety process data communications.
You assign device variables to I/O ports to gain access to the external devices from the safety pro-
grams.
You can check the I/O ports in the I/O Map of the Sysmac Studio.
1-4-2 I/O System for Safety I/O Units
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
Variables
Safety
I/O Unit
I/O port
Safety
I/O Unit
I/O port
Device variables
Safety CPU Unit
Safety program (or external communications)
Outside of Safety
CPU Unit:
Other Units
I/O ports are logical interfaces that
allow the Safety CPU Unit to exchange
data with external devices.

Omron NX-SID800 Specifications

General

Brand	Omron
Model	NX-SID800
Category	Controller
Language	English