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On this page
  • Data Tag Address
  • Connection Setup
  • Changing Security Mode
  • Changing Security Policy
  • Connection with Username and Password
  • Example
  • Certificate Authorization on Endpoints
  1. Knowledge Base
  2. Edge
  3. Common Data Sources

OPC-UA

Data Tag Address

Use the format:

ns=[namespace];s=[addressToTag]
  • namespace: Namespace of the tag.

  • addressToTag: Identifier for the tag.

  • Example: ns=2;s=TilliTDO-Demo.Line1.EquipmentStatusStopped

Connection Setup

  • Select OPC-UA as the connection type.

  • TilliT Edge will attempt a secure connection using Basic256Sha256 with a self-signed certificate.

  • Ensure the endpoint allows anonymous access by default.

  • For advanced connection details, input settings in JSON format in the options field.

Changing Security Mode

Use the following values for securityMode in the options field:

  • 0: Invalid

  • 1: None

  • 2: Sign

  • 3: SignAndEncrypt

Invalid = 0, 
None = 1, 
Sign = 2, 
SignAndEncrypt = 3

Changing Security Policy

Use these values for securityPolicy:

  • invalid: Invalid

  • http://opcfoundation.org/UA/SecurityPolicy#None: None

  • http://opcfoundation.org/UA/SecurityPolicy#Basic128: Basic128

  • http://opcfoundation.org/UA/SecurityPolicy#Basic192: Basic192

  • http://opcfoundation.org/UA/SecurityPolicy#Basic192Rsa15: Basic192Rsa15

  • http://opcfoundation.org/UA/SecurityPolicy#Basic256Rsa15: Basic256Rsa15

  • http://opcfoundation.org/UA/SecurityPolicy#Basic256Sha256: Basic256Sha256

Invalid = "invalid",
None = "http://opcfoundation.org/UA/SecurityPolicy#None",
Basic128 = "http://opcfoundation.org/UA/SecurityPolicy#Basic128",
Basic192 = "http://opcfoundation.org/UA/SecurityPolicy#Basic192",
Basic192Rsa15 = "http://opcfoundation.org/UA/SecurityPolicy#Basic192Rsa15",
Basic256Rsa15 = "http://opcfoundation.org/UA/SecurityPolicy#Basic256Rsa15",
Basic256Sha256 = "http://opcfoundation.org/UA/SecurityPolicy#Basic256Sha256",

Connection with Username and Password

Contact your support team to set up authentication with a username and password

Example

Type the following into the options field to enable an insecure connection.

{"securityMode":1, "securityPolicy":"http://opcfoundation.org/UA/SecurityPolicy#None"}

Endpoint Configuration in Ignition:

  • Navigate to Config -> OPC UA -> Security -> Server Settings.

  • Restart the OPC-UA server for changes to take effect. Ignore console confirmations until the server restarts.

Certificate Authorization on Endpoints

  • For secure connections, TilliT Edge uses a self-signed certificate.

  • On your OPC-UA server, locate the certificate in the quarantined zone (e.g., in Ignition: Config -> OPC UA -> Security -> Server).

  • Mark the certificate as trusted.

  • Once authorized, TilliT Edge can connect and read data tags.

PreviousCommon Data SourcesNextModbus TCP

Last updated 4 months ago