29 articles
Connect & Publish
Reading from 31 historians, databases, brokers, and APIs, and publishing onward to 13 downstream systems.
Data Sources
How Infohub Retrieves DataConnections, tag namespaces, query placeholders, and what actually happens when the engine asks for a period.Choosing a Data SourceAll 31 connectors, what each is for, and how to decide when a system can be reached more than one way.Data Source Capability MatrixWhich of the 31 data sources support which capabilities, read from the connector source.Wonderware / AVEVA HistorianConnecting to AVEVA (Wonderware) Historian, the client library dependency, and which of the four connectors to use.Canary HistorianTwo connectors for two API generations — choosing between them, and configuring the one you need.Ignition HistorianInfohub reads Ignition's historian database directly — which database engines are supported, and why the gateway name matters.OPC UA and OPC HDAThree OPC connectors — live UA, historical UA, and classic HDA — and the certificate trust step that catches everyone.SQL DatabasesReading SQL Server, Oracle, PostgreSQL, and MySQL — writing queries that return the right period, and the placeholders that make them templatable.The Flow Historian SimulatorRealistic simulated plant data that ships with Infohub — the right way to learn, demonstrate, and test.Connection Property ReferenceEvery configurable property declared by all 31 Infohub data source connectors.MQTT and Sparkplug BSubscribing to a broker — topic namespaces, JSON payloads, quality of service, and why a subscription means history starts now.Timebase HistorianReading Flow Software's own time series database — datasets, TLS, and the identity provider.Web Service Data SourcesReading any REST or HTTP API — endpoints, JSON paths, headers, timestamp units, and response caching.OAuth 2.0 for Web Service SourcesGrant types, client authentication methods, and Private Key JWT — configuring OAuth 2.0 without guesswork.Cloud Time Series and IoT PlatformsSnowflake, InfluxDB, AWS Timestream, Mindsphere, Netilion, Kafka and the rest — what they share and what to watch.Files and SpreadsheetsReading Excel files with the connector — and an honest case for using manual entry instead.Redundant Data SourcesOne measure, more than one place its data can come from — the multiple-retrievals mechanism, what it is for, and what it is not.
Consumers & Integration
What a Data Consumer IsPublishing Infohub's calculated data outward — how the send cycle works and what to decide before configuring one.Consumer ReferenceAll 13 Infohub data consumers and the properties each one declares.Consumer Capability MatrixWhich of the 13 consumers support which capabilities, read from the connector source.Consumer Placeholder ReferenceEvery substitution token available in consumer queries, topics, and payloads — including epoch variants and the timezone semantics that trip people.SQL and Snowflake ConsumersWriting to SQL Server, Oracle, PostgreSQL, MySQL, and Snowflake — the five queries, and verifying generated SQL before you deploy.MQTT and Sparkplug B ConsumersPublishing to a broker — topic and payload formats, placeholders, and the Sparkplug group and node identity.Kafka, Kinesis, and Event HubStreaming Infohub data into an event platform — partitioning, ordering, retention, and cost.Consumer Placeholder Token ReferenceAll 104 payload placeholder tokens across 10 contexts, read from the shared consumer placeholder engine.Flow-to-Flow ReplicationSending measures from one Infohub instance to another with the Flow consumer — identity, mapping, and replicated measures.Multi-Site ArchitectureThe hub-and-spoke pattern for a group of plants — what belongs at the site, what belongs centrally, and how to keep them comparable.Endpoint Consumers and Custom IntegrationWhen no consumer fits — the Endpoint consumer, choosing between push and pull, and designing an integration that survives.When Integration FailsWhere Integration Engine evidence lives, decoding timeouts, backfilling a consumer, and the failure patterns each consumer family produces.