Overview
ISO 20242-4:2011 - "Industrial automation systems and integration - Service interface for testing applications - Part 4: Device capability profile template" specifies how to describe device and coordinator capabilities and device configuration using XML. The standard defines the formatting, syntax and semantic rules for creating a Device Capability Profile Template (DCPT) and for producing Device Capability Descriptions (DCDs), Coordinator Capability Descriptions (CCDs) and Parameterization Instance Descriptions (PIDs). It uses the ISO 15745-1 information exchange profile as a skeleton and aligns with the Virtual Device Service Interface (VDSI) model in ISO 20242-3.
Key Topics
- XML schema-based templates: Defines a generic DCPT (technology-neutral) and rules for creating technology-specific extensions.
- DCD / CCD structure: Rules for DCDs (device-driver capability schemas) and CCDs (coordinator capability schemas), including required identification and capability description elements.
- PID instances: Procedures for creating PID XML instances that instantiate a CCD and one or more DCDs to deliver configuration data for runtime setups.
- Framework and inheritance model: Class diagrams and aggregation/inheritance relationships showing how generic, technology-specific and device-/coordinator-specific profiles relate.
- Interoperability focus: Emphasizes vendor-supplied schema extensions so device drivers and coordinators can be configured and integrated consistently.
- Annex examples: Informative annexes provide technology-specific DCPT examples (e.g., ASAM GDI, manufacturing applications, ORiN robot applications).
Applications
- Device and driver vendors: Create and publish DCD XML schemas with drivers to describe supported virtual device capabilities and parameters.
- Coordinator and middleware developers: Define CCD schemas to declare coordinator features and supported application program interface qualifications.
- System integrators and OEMs: Use configuration tools to import CCDs and DCDs, build PID XML instances and automate device configuration and deployment.
- Test automation and lab environments: Standardizes capability descriptions to enable repeatable test setups, interoperability between tools, and vendor-independent configuration.
- Automation software vendors: Implement VDSI-compatible configuration routines that read PID instances to initialize devices via device drivers.
Related Standards
- ISO 15745-1 (information exchange profile template) - used as the DCPT skeleton
- ISO 20242-1 (overview) and ISO 20242-3 (Virtual Device Service Interface) - normative context for service interfaces and VDSI usage
- Other parts of ISO 20242 series (application program interface, conformance tests) are complementary
ISO 20242-4 helps organizations achieve vendor- and platform-independent device configuration, improves compatibility between device drivers and coordinators, and supports systematic, XML-driven automation integration. Keywords: ISO 20242-4, DCPT, DCD, CCD, PID, XML schema, industrial automation, VDSI, device capability profile.