TwinCAT connectivity

OPC UA Server

Give plant software a defined interface to the TwinCAT machine.

Our OPC UA server connects TwinCAT PLCs to plant software through ADS, exposing selected machine data and PLC methods through a configurable OPC UA interface.

TwinCAT ADS connectorLive symbol discoveryOptional data history
Discuss OPC UA Server
OPC UA Server workspace with symbol browsing, live values and connection security settingsOpen full-size screenshot

Symbols, live values and connection security

Browse the PLC symbol tree, select exposed nodes and inspect their datatype, value and access settings in one workspace.

Capabilities

Choose the machine data your clients can use.

Connect existing PLC interfaces

Discover live TwinCAT symbols and datatypes through ADS, including supported structures and arrays. Select which variables to expose without maintaining a separate TPY export.

Control the interface

Configure writable variables, authenticated access, and certificate-based encryption. Expose selected PLC RPC methods and track completion of longer-running stepchain operations.

Run alongside production

Deploy as a console application or Windows service, with optional data history and ADS change notifications for selected machine values.

How it works

From the PLC symbol table to an OPC UA client.

  1. Connect to TwinCAT

    Configure the ADS connection to the target PLC and discover its live symbols and datatypes, including supported structures and arrays.

  2. Define the interface

    Select the variables to expose, set read or write access, and configure the PLC methods needed by the client application.

  3. Configure client access

    Set authentication and certificate-based encryption, then check access with the intended OPC UA clients.

  4. Exchange machine data

    Read exposed values, subscribe to changes and call configured methods. Enable optional history for the values that need it.

Integration & configuration

The details that shape your installation.

Machine connection
TwinCAT PLC communication through ADS.
Symbol discovery
Live symbol and datatype discovery; no separately maintained TPY export is needed.
Client interface
Selected OPC UA nodes with configured read/write access and supported PLC RPC methods.
Long-running actions
Completion tracking for configured stepchain operations.
Connection security
Authenticated access and certificate-based encryption.
History and notifications
Optional data history and ADS change notifications for selected values.
Deployment
Console application or Windows service.
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