KNX devices
Physical devices transmit group telegrams over the KNX bus.
Interactive diagram
How KNX connects to SCADA
From KNX devices to SCADA: equipment, connections and ZVENO configuration across three diagram levels.
Diagram levels
KNX devices connect through KNX/IP interfaces or routers. ZVENO publishes selected tags in OPC UA for SCADA.
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Switch levels using the C1–C3 buttons above the diagram, and zoom using the controls inside it.
C1 · Context
KNX/IP interfaces and routers
Connect ZVENO to the KNX network through a KNXnet/IP tunnel. The gateway creates a separate connection for each active source.
ZVENO
Receives KNX values and publishes selected tags through a single OPC UA server.
SCADA
The OPC UA client reads data and sends commands only for tags with writing enabled.
The ZVENO engineer configures the gateway over HTTPS; remote work uses an agreed customer VPN. The SCADA engineer configures mappings on their side.
C2 · Site connections
KNX/IP sources
Multiple KNX/IP interfaces or routers can connect to the gateway. A separate KNXnet/IP tunnel is created for each active source.
SCADA
Connects to the gateway's single OPC UA server and receives selected tags from all active sources.
For configuration, the engineer connects to the web interface over HTTPS on the site network or through an agreed VPN.
C3 · Configuration and data exchange
Web interface
The engineer adds connections, uploads an ETS project or creates points manually, then checks and applies the settings.
KNX/IP connections
Each active source uses a separate tunnel to a KNX/IP interface or router.
Selected points
The engineer selects points for publication in SCADA and separately enables writing where commands are required.
OPC UA server
A single server publishes selected tags from all active sources and accepts permitted commands from SCADA.
How data and commands flow
Each active KNX/IP source has its own tunnel to the gateway. Through a single OPC UA server, SCADA receives selected values, their quality and timestamps. For commands, writing is enabled separately for each tag.
How the gateway is configured
The engineer works with ZVENO's local HTTPS interface. Remote configuration is possible with agreed access to the site network through the customer's VPN. Settings are saved and checked first, then applied to the gateway.
Installation and configuration