Glossary

A certificate authority (CA) issues digital identity certificates in a public key infrastructure.

A certificate signing request (CSR) is made by an applicant to a certificate authority in order to apply for a digital identity certificate.

Applications and built-in services act as a client. In the Data Hub, a client is a provider, a consumer or both at the same time.

A consumer is a Data Hub client who consumes variables made available by one or more providers. Consumers do not provide new variables to the Data Hub. They can send, read or write requests to variables of providers and can subscribe to variable changes.

Central area for managing all settings and functions in the engineering system.

A provider is a client who provides variables to the Data Hub. The data of the variables are controlled by the provider. The provider handles variable read and write requests coming from consumers.

A service file is an encrypted archive that contains system logs and other system information. The Weidmüller Support might request the service file when troubleshooting an issue. Unencrypted log files can be downloaded from u-OS Control Center\Logs.

A snapshot is the result of a backup process and saves the state of the device including all changes at the moment of saving.

The Swagger UI is a tool that provides an interface to visualise and interact with APIs. The Swagger UI allows users to explore the API's endpoints, parameters, and responses directly in the browser.

A variable is the primary unit for data transfer between a provider and a consumer, owned by exactly one provider. Each variable has a unique key identifier within the provider. The providers must exchange all variables with consumers via the Variable-NATS-API.