Interface

Protocols on the same unified bridge

OPC UA, OPC DA on Windows, MQTT, Siemens S7, Modbus TCP, CSV/DAT files, PI SDK, PI SDK-COM, and BridgeLink configure as standard connections. Enabled protocols depend on machine node licensing.

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Connections

A single connection manager

Each protocol registers as a source, destination, or bidirectional connection. Interactive tests validate communication before tag mapping.

Protocol

OPC UA

OPC UA server as source, target, or bidirectional bridge.

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Protocol

OPC DA

Classic OPC Data Access for legacy Windows architectures.

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Protocol

MQTT

MQTT broker for publishing, subscribing, and dynamic payloads.

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Protocol

Siemens S7

Direct Siemens S7 PLC communication without external OPC servers.

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Protocol

Modbus TCP

Modbus TCP/IP as source or target for industrial instrumentation.

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Protocol

CSV/DAT

Scheduled CSV and DAT file ingestion or automated generation.

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Protocol

PI SDK

OSIsoft PI Data Archive points via native PI SDK on Windows.

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Protocol

PI SDK-COM

OSIsoft PI access via COM automation components on Windows.

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Protocol

BridgeLink

Secure stream routing between multiple Luciai Multiconnector instances.

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Technical Matrix

Protocol compatibility and operational modes

Comparative overview of field and industrial network protocols, data directions, operating system support, and typical OT/IT integration scenarios.

Protocol	Category	Data Direction	Operating System	Typical Industrial Use Case
OPC UA	Industrial OPC	Source / Destination / Bidirectional	`Windows & Linux`	SCADA, DCS, and modern PLC integration with x509 cryptographic security
OPC DA	Industrial Classic	Source / Destination / Bidirectional	`Windows`	Direct bridging of legacy COM/DCOM OPC servers into modern systems
MQTT	IoT / Cloud / Edge	Source / Destination / Bidirectional	`Windows & Linux`	Publish and subscribe integration with enterprise brokers and IoT platforms
Siemens S7	PLC Automation	Source / Destination	`Windows & Linux`	Direct S7 Ethernet protocol to S7-300, S7-400, S7-1200, and S7-1500 controllers
Modbus TCP	Field Bus	Source / Destination	`Windows & Linux`	Communication with power meters, RTUs, and distributed industrial transmitters
CSV / DAT	Batch / Files	Source / Destination	`Windows & Linux`	Automated ingestion or scheduled generation of structured delimited flat files
PI SDK	Historian	Source / Destination	`Windows`	Native bi-directional streaming to/from OSIsoft PI Data Archive servers
PI SDK-COM	Legacy Historian	Source / Destination	`Windows`	Access to OSIsoft PI infrastructure through legacy Windows COM automation
BridgeLink	Inter-Node Relay	Bidirectional (Relay)	`Windows & Linux`	Cross-plant encrypted WSS relay with egress queueing and zero tag-by-tag remap