OPC client and subscriber code examples using QuickOPC in VBScript for OPC Data Access (OPC DA) and OPC Unified Architecture (OPC UA), including OPC UA PubSub.

OPC client and subscriber code examples using QuickOPC in VB6 for OPC Data Access (OPC DA) and OPC Unified Architecture (OPC UA), including OPC UA PubSub.

OPC client and subscriber code examples using QuickOPC in PHP for OPC Data Access (OPC DA) and OPC Unified Architecture (OPC UA), including OPC UA PubSub.

OPC client and subscriber code examples using QuickOPC in Object Pascal (Delphi) for OPC Data Access (OPC DA) and OPC Unified Architecture (OPC UA), including OPC UA PubSub.

OPC client and subscriber code examples using QuickOPC in Python for OPC Data Access (OPC DA) and OPC Unified Architecture (OPC UA), including OPC UA PubSub.

OPC client and subscriber code examples using QuickOPC in VB.NET for OPC Data Access (OPC DA) and OPC Unified Architecture (OPC UA), including OPC UA PubSub.

OPC client and subscriber code examples using QuickOPC in PowerShell for OPC Data Access (OPC DA) and OPC Unified Architecture (OPC UA), including OPC UA PubSub.

OPC client and subscriber code examples using QuickOPC in C#, for OPC Data Access (OPC DA) and OPC Unified Architecture (OPC UA), including OPC UA PubSub.

OPC client made simpler, for UA and DA, fork for netstandard2.0

A IOT-Server,The tree root supports devices and data management, and the upper tree supports to combine various business functions by message flow

An OPC DA client written purely in Go

An open source OPC DA Client SDK/ToolKit written in C++, support both 32 bit and 64 bit.

Opcda Java. Feel free to open an issue if you have any questions or feature requests.

opcda ,opcua ,

Opc Sample

opc browser

OPC DA and OPC HDA library based on the work openscada and j-interop.

OPC Data Access .NET Client Library

This is a tutorial of the DCS system and data collecting from the OPC server.

OPC Client code which is intended for python.