TwinCAT 3 PLC Project: IEC 61850-9-2LE (LE stands for light edition) sampled values publisher/subscriber sample
Copyright (c) 2026 Beckhoff Automation GmbH & Co.KG
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What is this?
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This example shows the implementation of SV publisher/subscriber in TwinCAT PLC.

Requirements
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TwinCAT v3.1.4026.0 and higher
TwinCAT Function: TF6510 (TwinCAT IEC 61850 Telecontrol Configurator)

What is included?
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There are four main files:
../Publisher/Sample14.icd - IED capability description (SCL file format).
../Publisher/Sample14/Sample14.sln - TwinCAT XAE SV publisher solution (VS20xx/TcXaeShell file format).
../Subscriber/Sample14.icd - IED capability description (SCL file format).
../Subscriber/Sample14/Sample14.sln - TwinCAT XAE SV subscriber solution (VS20xx/TcXaeShell file format).
The solution files contain TwinCAT PLC project with IEC 61850-9-2LE data model and basic default publisher/subscriber implementation created by TwinCAT IEC 61850 Telecontrol Configurator. 

How to use the sample?
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There are three main use cases:
1. Open the solution in TwinCAT XAE environment, add or modify PLC source code and load the PLC project onto your controller. Connect to existing or simulated SV publisher/subscriber.
2. Import the SCL file in TwinCAT IEC 61850 Telecontrol Configurator and create new or modify existing TwinCAT PLC SV publisher/subscriber project. 
3. Load the SCL file in third party software and simulate the IEC 61850-9-2LE SV publisher/subscriber.

