Overview

This chapter describes the configuration steps for using OPC UA Alarms and Conditions (A&C) on the TwinCAT OPC UA Server. OPC UA A&C describes a model for monitoring symbol values and issuing alarms and events when values change or threshold values of a symbol are exceeded.

Overview 1:

Requirements

This configuration can be carried out for variables from any runtime system (e.g. TwinCAT PLC or TwinCAT 3 C++, ...). As a prerequisite, the respective variable must first be enabled for OPC UA. You can find out how to do this in our Quick Start tutorial.