OPC UA server¶

BrowseName: OPCUAServer
SuperType: Object (BaseObjectType)
TypeView path: Tipi >  OPC-UA > Server OPC UA

Publishes nodes of the information model for the OPC UA client project.

Applications

This object publishes the selected nodes of the project information model to the selected users, for the OPC UA client. It also publishes all the child nodes and all the parent nodes of the selected nodes.

The object supports the connection with multiple clients through a single endpoint.

Note

the use of an OPC UA Server object requires the use of a license token. Activating the possibility to connect with multiple clients (Multiple connections property) uses three tokens.

Configuring the object

Set the nodes to publish

Click the desired OPC UA Server object.
In the Property panel, in Nodes to publish, click : a configuration of nodes to publish is added.

In the configuration just created, select the desired nodes and the client users to publish them to.
Repeat the two previous steps for each desired configuration of nodes and users.

Safety configurations

Based on the values of the two Minimum message security mode and Minimum security policy properties, the valid security configurations are the following, in order of increasing security:

Minimum security policy	Minimum message security mode
None	None
Basic256Sha256	Signature
Basic256Sha256	Signature and cryptography
Aes128_Sha256_RsaOaep	Signature
Aes128_Sha256_RsaOaep	Signature and cryptography
Aes256_Sha256_RsaPss	Signature
Aes256_Sha256_RsaPss	Signature and cryptography

If one of the two properties has the value None and the other does not, the server does not generate an error at the start and does not display the None-None configuration.

Properties¶

Name	BrowseName	DataType	Description
Endpoint URL	EndpointURL	ResourceUri	Communications protocol and network address of the endpoint on the server.
Sampling interval	SamplingInterval	Duration	Time interval between successive readings of the field variables by the server.
Multiple connection	AllowMultipleConnection	Boolean	Enables the possibility to communicate with multiple OPC UA clients at the same time (requires three license tokens).
Minimum message security mode	MinimumMessageSecurityMode	MessageSecurityModeEnum	Minimum security level for messages exchanged between client and server. None = the messages can be unsigned and unencrypted; Signature = the messages must be signed or signed and encrypted; Signature and encryption = the messages must be signed and encrypted.
Minimum security policy	MinimumSecurityPolicy	SecurityPolicyEnum	Minimum security level for messages exchanged between client and server. None = the client does not require any specific security policy; Basic256Sha256 = this policy or more secure; Aes128_Sha256_RsaOaep = this policy or more secure; Aes256_Sha256_RsaPss = this policy.
Server certificate file	ServerCertificateFile	ResourceUri	Server public certificate file, according to standard X509v3 and with .der extension. It must be found in the QApplication/ProjectFiles/PKI/Own/Server/ folder. If specified, the private key must also be specified. If not specified, it is automatically generated at runtime in the QApplication/ApplicationFiles/PKI/Own/Server folder.
Server private key file	ServerPrivateKeyFile	ResourceUri	Server private key file, with ASCII Base64 encoding and .pem extension. It must be found in the QApplication/ProjectFiles/PKI/Own/Server/ folder. If specified, the certificate must also be specified. If not specified, it is automatically generated at runtime in the QApplication/ApplicationFiles/PKI/Own/Server folder.
Product URI	ProductURI	String	URI that globally identifies the software
Product name	ProductName	String	Name of the software
Manufacturer name	ManufacturerName	String	Name of the software manufacturer
Nodes to publish	NodesToPublish	Collection of NodesToPublishConfigurationEntry	Configuration of the nodes to be published and the users to publish them to.