Overview; About The Dst1-Series Safety I/O Terminals - Omron DeviceNet DST1 Series Operation Manual

1-1 Overview

1-1 Overview
1-1-1

About the DST1-series Safety I/O Terminals

The DST1-series Safety I/O Terminals support the DeviceNet Safety protocol and
provide various functions for the Safety System. The DST1-series Safety I/O Terminals
allow the user to construct a safety control/network system that meets the requirements
for Safety Integrity Level (SIL) 3 according to IEC 61508 (Functional Safety of
Electrical/Electronic/ Programmable Electronic Safety-related Systems) and the
requirements for Safety Category 4 according to EN 954-1.
The DST1-series Safety I/O Terminal's safety I/O data is transmitted through safety I/O
communications conforming to the DeviceNet Safety Protocol, and the data processing
is performed in conducted in the Safety Network Controller (NE1A-SCPU01).
Also, the status of the safety I/O data can be monitored in a standard PLC in an existing
DeviceNet network using standard I/O communications or explicit message
communications.
Network Configurator
DST1-series
Safety I/O Terminal
Emergency Stop
Button
Safety Door Switch
1-2
Safety Network Controller
DeviceNet Network
Two-hand Switch
Enable Switch
Safety Limit Switch
DST1-series
Safety I/O Terminal
Safety Relay
Safety Relay Unit
Safety Light Curtain
PLC
DeviceNet Master
Contactor
Valve