Node Reference#

NodeId Pattern#

<IndEqOpcUaBaseNodeId>.<RelativeNode>

IndEqOpcUaBaseNodeId is a fully qualified string NodeId in the form ns=<Namespace>;s=<HierarchyPath>. The tables below show the relative nodes appended to it. See OPC UA Address Space.

Track In#

Relative node	Type	Owner	Access needed by Connect IoT
`Operation.TrackIn.Material.Name`	`String`	Machine	Read
`Operation.TrackIn.MachineOperationRequest`	`Boolean`	Machine	Read / subscribe
`Operation.TrackIn.MESOperationPerformed`	`Boolean`	MES / Connect IoT	Write
`Operation.TrackIn.MachineOperationConfirmed`	`Boolean`	Machine	Read / subscribe

Track Out#

Relative node	Type	Owner	Access needed by Connect IoT
`Operation.TrackOut.Material.Name`	`String`	Machine	Read
`Operation.TrackOut.MachineOperationRequest`	`Boolean`	Machine	Read / subscribe
`Operation.TrackOut.MESOperationPerformed`	`Boolean`	MES / Connect IoT	Write
`Operation.TrackOut.MachineOperationConfirmed`	`Boolean`	Machine	Read / subscribe

Abort#

Relative node	Type	Owner	Access needed by Connect IoT
`Operation.Abort.Material.Name`	`String`	Machine	Read
`Operation.Abort.MachineOperationRequest`	`Boolean`	Machine	Read / subscribe
`Operation.Abort.MESOperationPerformed`	`Boolean`	MES / Connect IoT	Write
`Operation.Abort.MachineOperationConfirmed`	`Boolean`	Machine	Read / subscribe

Recipe#

Relative pattern	Type	Owner	Access needed by Connect IoT
`Recipe.<ParameterName>`	Parameter-specific	MES / Connect IoT	Write
`Recipe.<ResourceRecipeName>.<ParameterName>`	Parameter-specific	MES / Connect IoT	Write

The names are dynamic and must match MES. Placeholder names are not part of the fixed contract.

Data Collection#

Relative node	Type	Owner	Access needed by Connect IoT
`DataCollection.Material.Name`	`String`	Machine	Read
`DataCollection.PostDataReadingNumber`	`Int32`	Machine	Read
`DataCollection.PostDataSampleId`	`String`	Machine	Read
`DataCollection.Parameters.<ParameterName>`	Parameter-specific	Machine	Read
`DataCollection.MachinePostDataRequest`	`Boolean`	Machine	Read / subscribe
`DataCollection.MESPostDataPerformed`	`Boolean`	MES / Connect IoT	Write

State#

Relative node	Type	Owner	Access needed by Connect IoT
`State.MainState`	`String`	Machine	Read / subscribe
`State.SubState`	`String`	Machine	Read / subscribe
`State.Reason`	`String`	Machine	Read / subscribe

Initial Values#

At idle, initialize control nodes to:

Operation.*.MachineOperationRequest   = false
Operation.*.MESOperationPerformed     = false
Operation.*.MachineOperationConfirmed = false
DataCollection.MachinePostDataRequest = false
DataCollection.MESPostDataPerformed   = false

Payload and state initial values are project-specific. Use values that are valid for their OPC UA type and cannot be confused with a real production request.

Direction Summary#

flowchart LR
    M("Machine / PLC<br/>Request, Payload, Confirmation, and State")
        <--> S("OPC UA Server")

    S -->|"Read / Subscribe"| I("Connect IoT")
    I -->|"Write Performed Signals<br/>and Recipe Values"| S

    I <--> E("Critical Manufacturing MES")

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    classDef highlight fill:#075C00,stroke:#075C00,color:#FFFFFF,stroke-width:1.5px;

    class M,S,E standard;
    class I highlight;

    linkStyle default stroke:#94A3B8,stroke-width:1.5px;