4. Introduction
4
4. Introduction
This document describes the procedure for connecting the OMRON Safety Light
Curtain/Multi-Beam Safety Sensor F3SG-SR/PG series (simply referred to as "safety light
curtain" from here on) to the OMRON Machine Automation Controller NX series (simply
referred to as "controller" from here on) via the OMRON Intelligent Tap by the IO-Link
System.
An IO-Link System allows the following possibilities.
● Reading of ON/OFF information and other various information is possible
The controller can cyclically read the following ON/OFF information:
• Input signals and status from IO-Link devices*1
• Disconnections, short-circuits, I/O power supply ON status, etc., between the IO-Link
Master Unit and devices
*1: Examples for photoelectric sensors: unstable detection and sensor errors.
The information from these is called "process data," and this is shared periodically between
the safety light curtain and IO-Link Master Unit.
In this document, a sample program for making checking of the following easier is introduced
in 10.1 Sample Program for Acquiring Process Data.
• Power supply voltage of receiver
● Reading of user-specified data in IO-Link devices from the controller is possible
User-specified data in IO-Link devices can be read from the controller by executing
communications instructions in the controller.
Because an IO-Link System can cyclically read analog data such as the amount of incident light
in addition to ON/OFF information, it can be used for predictive maintenance based on detection
of such things as decreases in the amount of light.
This enables the status of the safety light curtain to be monitored.
The information of these is called "service data," and any information can be acquired from
the safety light curtain by executing communications instructions from the controller when
necessary.
4.1 What Is an IO-Link System?
Additional Information
This document describes the connection procedure up to establishment of
communications on the IO-Link System. It does not describe operation, installation and
wiring of safety I/O functions such as OSSD, and the functions and operations of devices.
For details on safety I/O functions, refer to the manuals, instruction sheets and other
documentation for the safety controllers, or contact OMRON.
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