IO-Link
| Version | - |
|---|---|
| Published | - |
| Sector | Fieldbus and sensor integration |
The IO-Link model, which brings sensor and actuator level data up into OPC UA. IO-Link is enormously widely deployed at the sensor level, and IODD device descriptions carry the semantics - which makes this a bridge between two description worlds rather than a machine model.
Where it sits in the stack
Built on the Device Information Model. IODD files are the IO-Link world's own device description format, and reconciling them with OPC UA information models is the substance of this integration.
The types that matter
| Type | What it carries |
|---|---|
(type inventory not confirmed) | We have not verified the type inventory. The IOLINK capability code is registered. |
Using it on a real machine
- Check the capability codeA server claiming IOLINK is exposing IO-Link masters or devices. Read the ServerCapabilities first.
- Understand where the semantics liveIODD files describe IO-Link devices. Whether and how that semantic content surfaces in the OPC UA address space is the key question for your integration.
- Expect a lot of nodesSensor-level data multiplies fast. An IO-Link master with many ports, each with a device with many parameters, produces a large address space - filter before you subscribe.
What it gives you for OEE
Sensor-level data rather than production data. It contributes to condition monitoring and to diagnosing a cause: a sensor reporting a fault explains a stop that would otherwise be unattributed. Not a source of counts or state.
Gotchas
- Node count explodes at sensor level. Filter your browse and be selective about subscriptions.
- IODD is a separate description format. How its semantics surface in OPC UA is the real question.
- Sensor diagnostics explain downtime; they do not measure production.
Once the machine speaks a companion spec, the OEE mapping is portable across vendors, which is the point at which analytics stops being a per-machine project.
See Jemba →Last verified 7 September 2026 against OPC UA 1.05.07. Version and publication date read from the released nodeset. OPC UA Connect is an educational resource and is not affiliated with the OPC Foundation.