OPC-UA Server - Instance & item setup
How to setup an OPC-UA server instance and item in SIA
The SIA OPC-UA Server Connector allows connections to items in SIA using the OPC-UA protocol.
Both unencrypted as well as encrypted access is available.
Parameters
The OPC-UA Server has specific parameters for both the instance and the item.
Instance
The instance needs the following parameters to configure the server
| Parameter | Description |
|---|---|
| Name | The dot(.) separated URN of the service. My Service -> urn:My.Service.sia |
| Port | The TCP port where the server will be available Default: 4840 |
| Certificate (optional) | A certificate file in .pem or .der format for establishing authenticity |
| Key (optional) | An x509 key pair in either .pem or .der format for encryption |
Item
The item must be configured to expose an item in another connector
| Parameter | Description |
|---|---|
| Name | Browsable name of the OPC-UA node. Do not use spaces |
| Desc. | The description available for the node. |
| Item | UID or name of the referenced item enclosed in % e.g. %BOTTLE_CNT% |
Info
Currently there is no support for namespaces other than 1. Please contact sales with your use case if this is necessary for you.
Data types
All values are given as OPC-UA strings.