Reference

OPC UA integrations

How to get OPC UA working with the PLCs, SCADA systems, brokers, historians and cloud services you already run: including the licensing and firmware traps that turn a two-day job into a two-month one.

PLC 6

Siemens S7-1500The S7-1500 has an OPC UA server built into the CPU firmware, enabled in TIA Portal and reachable at opc.tcp://<plc-ip>:4840. The catch is commercial Siemens S7-1200The S7-1200 can act as an OPC UA server, configured in TIA Portal like its larger sibling and reachable on opc.tcp://<plc-ip>:4840. Expect a licence o Siemens TIA Portal OPC UA configTIA Portal is where a Siemens CPU's OPC UA server is configured: enabling the server, publishing tags, defining server interfaces, setting security po Beckhoff TwinCATTwinCAT exposes OPC UA through the TF6100 function: a server, a client and a gateway, configured on the target rather than in the PLC program. Symbols CODESYSCODESYS provides an OPC UA server as part of its runtime, and because CODESYS is the engine inside many small and mid-sized PLC brands, you often meet Rockwell / Allen-Bradley via gatewayControlLogix and CompactLogix controllers have historically had no native OPC UA server, so the standard pattern is a gateway that speaks EtherNet/IP

SCADA 1

Ignition (Inductive Automation)Ignition is both an OPC UA client and an OPC UA server. The gateway connects outward to PLC and gateway servers, and republishes its own tags through

Gateway 1

KEPServerEX / KepwareKEPServerEX is the default answer where a PLC has no usable OPC UA server: native drivers speak the vendor protocol southbound and it publishes an OPC

Integration 1

Node-REDNode-RED talks OPC UA through community nodes rather than a built-in capability, which makes it excellent for prototyping a client in an afternoon and

Visualisation 1

GrafanaGrafana has no first-party OPC UA data source. The supported architecture is to land OPC UA data in a time-series database and point Grafana at that.

Time series 1

Telegraf / InfluxDBTelegraf is a practical OPC UA collector: the opcua input plugin polls nodes on an interval and the opcua_listener input plugin subscribes to data cha

Cloud 2

Azure IoT Edge / OPC PublisherOPC Publisher is an OPC UA client that runs as an IoT Edge module, subscribes to nodes you list in a configuration file, and forwards them to Azure Io AWS IoT SiteWiseSiteWise ingests OPC UA data through a gateway component that runs on-premises, subscribes to your servers and forwards to AWS. Its distinguishing fea

Broker 1

Mosquitto / MQTT brokerMosquitto speaks no OPC UA at all. It is the northbound transport in the common architecture where an OPC UA client or an OPC UA PubSub publisher maps

Deployment 1

DockerContainerising an OPC UA client or server works well, with one trap that catches almost everyone: the application instance certificate lives in the PK

Analysis 1

Python pandas / JupyterPulling OPC UA data straight into a DataFrame is the fastest way to answer a question about a machine, and the right tool for a one-off investigation.

Reference architecture 1

TEEPTRAK OEE platformA reference architecture page: how a commercial OEE platform consumes OPC UA, using TEEPTRAK as the worked example. The pattern is the same for any OE

Last verified 7 September 2026 against OPC UA 1.05.07. OPC UA Connect is an educational resource and is not affiliated with the OPC Foundation.