OPC-UA Data Access

The connector supports the data access of OPC-UA server.

Name	Description	Data Type
Id	Id of the data access point	System.Guid
Name	Name of the item	System.String
Address	OPC-UA node id; Examples: (ns=2;g={13BB68D0-3B8E-42B9-A5BC-993E5B0D49A8}, ns=2;s=myItemIdentifier)	System.String
AccessMode	Read, write or callback flags

Additional OPC-UA properties

Name	Description	Data Type
opc:SubscriptionId	Id of the subscription: (MED: Medium speed (default); FAST: Fast speed; SLOW: Slow speed)	System.String

{
  "Id": "1bd0e8c5-1b1f-4018-b1a3-4684cfb221de",
  "Name": "X-Position Absolute",
  "DataType": "System.Double",
  "DataClass": "Stream",
  "Unit": "mm",
  "Address": "ns=2;g={13BB68D0-3B8E-42B9-A5BC-993E5B0D49A8}",
  "Access": {
    "Read": true,
    "Receive": true
  },
  "HistoryMode": {
    "Retention": 1,
    "SampleRate": 2000,
  },
  "Properties": [
    {
      "Name": "opc:SubscriptionId",
      "Value": "MED"
    }
  ]
}

Special Data Nodes

There are special data nodes, provided by the OPC-UA client to outside consumers:

• Available: Provides an available flag indicating if the client has a valid connection to the server:
  Address: ns=2;s=opc:Available
• SignalOfLife: A toggle life bit indicating if the client has a valid an life connection to the server
  Address: ns=2;s=opc:SignalOfLife