Reference
OPC UA companion specifications
Companion specifications are standard information models for an industry, so a machine describes itself the same way whoever built it. The Device Information Model, Machinery, MachineTool and PackML stack is the one every OEE project meets.
52 pages
Tier 1: you will meet these on almost any project 15
DIOPC UA for Devices (DI, Part 100) is the base information model that almost every other companion specification builds on. It defines DeviceType and TMachineryOPC UA for Machinery is the building-block layer that standardises how any machine publishes identity, state, operation mode and counters. It defines Machinery ProcessValuesMachinery ProcessValues is the small Machinery companion namespace that standardises how a machine exposes analog process values: the measured value wMachinery ResultMachinery Result is the quality layer of the Machinery family. It standardises how a machine reports the outcome of a processing step: a result with mMachinery JobsMachinery Jobs adds order context to the Machinery family. It standardises the job a machine is currently working on, how it was dispatched, what it pMachinery EnergyMachinery Energy is the newest Machinery namespace and standardises non-electrical energy and media consumption on a machine: compressed air, gas, steMachineToolOPC UA for Machine Tools is the richest OEE-ready companion specification. It defines MachineToolType with production state machines, ProductionStatisPackMLOPC UA for PackML maps the ISA-88 TR88 packaging machine model into OPC UA: the 17-state machine, the unit and mode structure, and the Status and AdmiWeihenstephanThe Weihenstephan companion specification brings the Weihenstephan Standards for brewing, beverage and food equipment into OPC UA. It defines WSMachinRoboticsOPC UA for Robotics models an industrial robot as a motion device system: controllers, motion devices, axes, power trains with motors and gears, load,IA (Industrial Automation)IA is the thin shared layer between DI and the machine-level companion specifications. It is not a model you implement on its own: it exists so that mPA-DIMPA-DIM is the Process Automation Device Information Model, the process-industry counterpart to DI. It standardises a vendor-neutral core set of deviceumatiumati is not a specification. It is the adoption vehicle for the machinery companion specs, a joint VDW and VDMA initiative that curates a subset of tGDSThe Global Discovery Server information model (Part 12) standardises fleet certificate management. It defines the certificate directory a device asks UAFX AC / CM / DataUAFX (OPC UA Field eXchange) extends OPC UA to controller-to-controller and controller-to-device communication. It ships as three nodesets at 1.00.04:
Sector-specific 37
ISA-95 Job Control V2ISA-95 Job Control V2 is the standard MES-to-machine work order handshake in OPC UA: the MES sends a structured job order, the machine reports job staISA-95 (legacy)The original OPC UA ISA-95 nodeset is version 1.00, published 2013-11-06, and it has not moved since. It is documented here so you can recognise it anAutoIDOPC UA for AutoID standardises identification devices: RFID readers, barcode and 2D code scanners, OCR readers and RTLS locating systems. It models thMachineVisionOPC UA for Machine Vision models a vision system as a controllable unit: an operating-mode state machine, recipe management for the inspection programMachineVision AMCMAMCM is the asynchronous machine control extension to OPC UA for Machine Vision, published 2024-05-17 as version 1.00.0. It adds request and response AMBAMB, asset management basics, is the small cross-industry model for machine health signalling. Version 1.01.1 dates from 2024-02-27. Its value is struPlasticsRubber GeneralTypesThe shared base of the plastics and rubber companion specification family, which is where the Euromap work ended up. If you are integrating an injectiPlasticsRubber Extrusion v2The second-generation extrusion model for the plastics and rubber family, published as its own namespace rather than as a revision of v1. An extrusionPlasticsRubber LDSThe leak detection system model in the plastics and rubber family. Narrow in scope and useful when you have this equipment, with the family's usual caPlasticsRubber Dosing / GDD / HotRunner / TCD / FoamCuttingThe auxiliary equipment models in the plastics and rubber family: dosing, general data definitions, hot runner control, temperature control devices anWoodworkingThe VDMA woodworking machinery model, and one of the more mature sector models - actively maintained and, unusually, testable for free on a public serEumaboisA woodworking-adjacent model associated with the European woodworking machinery association. The notable fact about it is its version: 0.14, publishedGlass Flat v2The flat glass model, second generation, published as its own v2 namespace. Flat glass processing lines are long sequences of cooperating machines, anMetalFormingThe metal forming machinery model, published in 2024. Presses and forming lines have a strong natural cycle, which makes them good OEE candidates onceMining (General, TransportDumping, Conveying)The mining equipment family - general types plus transport, dumping and conveying models. One of the fastest-growing families in 2026, which reflects SurfaceTechnology (GeneralTypes, Plasma, OCT-MSS, CleaningPretreatment)The surface technology family: general types plus plasma treatment, an optical coherence measurement model and cleaning and pretreatment. The fastest-AdditiveManufacturingThe additive manufacturing model, published in 2025 and implemented by the umati sample server, which makes it one of the newer models you can actuallLaserSystemsThe laser systems model, published in 2024. Laser sources and systems appear inside cutting, welding and marking machines, so this model is often a coCNCA CNC-focused model, and one where the ecosystem has largely moved on: new machine-tool projects target MachineTool plus Machinery instead, and the CNCuttingToolThe cutting tool model, published in 2024. It describes tools as things in their own right - with identity, geometry and life - rather than as numbersPowertrainThe powertrain model, published in 2024, notable for shipping its own IRDI dictionary alongside the information model - the same semantic-identifier aIJT BaseThe base model for industrial joining technology, refreshed in October 2025 - one of the more actively maintained sector families. It underpins the tiIJT TighteningThe tightening systems model, at version 2.00.1 as of October 2025 - a second-generation model in an actively maintained family. It describes tighteniScales V2The weighing equipment model, second generation, published March 2025. Scales appear throughout food, pharmaceutical and chemical production, and weigPumpsThe pump model, published in 2021 and stable since. Pumps are everywhere in process industry and are classic candidates for condition monitoring, sincLADSThe laboratory and analytical device model, published in late 2023. Laboratory instruments have historically been the least connected equipment in anyFDI5 / FDI7The Field Device Integration models, and the notable fact is the date: these nodesets are frozen at 2017 and have not moved since. FDI addresses devicIO-LinkThe 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 devPROFINET family (PNEM, PNENC, PNRIO, PNDRV, PNGSDGM)A family of models bringing PROFINET concepts into OPC UA: energy management, encoders, remote IO, drives and GSD-based generic modelling. These existIEC 61850A mapping between IEC 61850, the electrical substation automation standard, and OPC UA. It exists because electrical infrastructure and industrial autMDISThe MDIS model, at 1.3 as of November 2024, covering subsea instrumentation and control interfaces for oil and gas. A narrow, mature, well-adopted modMTConnectMTConnect is a separate machine-tool data standard with its own agent architecture, and a nodeset exists mapping it into OPC UA. The honest position: I4AAS / AASA mapping of the Asset Administration Shell into OPC UA. The AAS is the Industrie 4.0 digital twin container, and this nodeset - at version 5.0.0 fromWoT-ConThe Web of Things connectivity model, at 1.02.0 as of December 2025 and among the more actively developed Tier-2 models. It bridges W3C Web of Things OnboardingThe device onboarding model, at 1.05.04 from January 2025. It addresses how a device is securely introduced into a network and issued credentials - thSafetyThe OPC UA Safety model, at 1.05.04 from February 2025. It defines a safety communication layer for transmitting safety-relevant data over OPC UA, whiPlasticsRubber IMM2MESThe injection moulding machine to MES interface, and the member of the plastics and rubber family most likely to matter to a production system. This i
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.