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        <title>Prosys Forum - Forum: OPC UA Simulation Server</title>
        <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/</link>
        <description><![CDATA[Prosys OPC &#038; OPC UA related discussion]]></description>
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		                <item>
                    <title>Knut on Cannot import nodeset from Siemens OPC-UA Server</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/cannot-import-nodeset-from-siemens-opc-ua-server/#p7580</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/cannot-import-nodeset-from-siemens-opc-ua-server/#p7580</guid>
					                        <description><![CDATA[<p>Thanks to the Prosys great support the problem could be solved. To anyone who is faced with the same issue here is the solution.</p>
<p>The namespace<br />
urn:SIMATIC.S7-1500.OPC-UA.Application:PLC_OPC_Server<br />
is a PLC internal namesapce. Fortunately it is nowhere refrenced in the model. So one could easily create an empty namespace with the same name before importing the model and the dependency is resolved.<br />
The second namespace<br />
<a href="http://www.siemens.com/simatic-s7-opcua" rel="nofollow" target="_blank">http://www.siemens.com/simatic-s7-opcua</a><br />
is a self referencing namespace from Siemens and its dependency is gone with the first too.</p>
<p>Thank you Matti</p>
]]></description>
					                    <pubDate>Mon, 01 Jun 2026 14:22:37 +0300</pubDate>
                </item>
				                <item>
                    <title>Matti Siponen on Cannot import nodeset from Siemens OPC-UA Server</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/cannot-import-nodeset-from-siemens-opc-ua-server/#p7579</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/cannot-import-nodeset-from-siemens-opc-ua-server/#p7579</guid>
					                        <description><![CDATA[<p>Hello,</p>
<p>If there is a missing dependency, you will most likely need to contact Siemens for support. If you wish, you can send the NodeSet to us using <a href="mailto:simulation-server-support@prosysopc.com" target="_blank">simulation-server-support@prosysopc.com</a> so that we can confirm the error being a missing dependency.</p>
]]></description>
					                    <pubDate>Fri, 29 May 2026 10:50:05 +0300</pubDate>
                </item>
				                <item>
                    <title>Knut on Cannot import nodeset from Siemens OPC-UA Server</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/cannot-import-nodeset-from-siemens-opc-ua-server/#p7578</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/cannot-import-nodeset-from-siemens-opc-ua-server/#p7578</guid>
					                        <description><![CDATA[<p>I want "OPC UA Simulation Server" run as a digital twin of a Siemens S7-1500 OPC-UA-Server.<br />
I can export the whole nodeset using Siemens TIA Portal manager. But when I try import the nodeset to "OPC UA Simulation Server" it claims that I have to import referenced namespaces first, as there are<br />
        urn:SIMATIC.S7-1500.OPC-UA.Application:PLC_OPC_Server<br />
        <a href="http://www.siemens.com/simatic-s7-opcua" rel="nofollow" target="_blank">http://www.siemens.com/simatic-s7-opcua</a><br />
I suppose these are Siemens extensions to the default namespaces, but I've found no way to export them too. </p>
<p>Do I have to get in touch with Siemens or did someone manage to get a Siemens UPC-UA nodeset running on OPC-UA Simulation Server, may be with a work around?</p>
<p>Regards</p>
]]></description>
					                    <pubDate>Fri, 29 May 2026 00:11:07 +0300</pubDate>
                </item>
				                <item>
                    <title>ahmad.qureshi3@se.abb.com on NodeSet import error: "The model could not be loaded to server address space ".</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/nodeset-import-error-the-model-could-not-be-loaded-to-server-address-space/#p7545</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/nodeset-import-error-the-model-could-not-be-loaded-to-server-address-space/#p7545</guid>
					                        <description><![CDATA[<p>Hello,</p>
<p>Thanks for your reply.</p>
<p>The complete nodeset is sent the <a href="mailto:simulation-server-support@prosysopc.com" target="_blank">simulation-server-support@prosysopc.com</a>. On the forum only interesting subset of nodeset was shared.</p>
<p>While importing the nodeset to Simulation Server complete nodeset was used.</p>
<p>Thanks!</p>
]]></description>
					                    <pubDate>Wed, 29 Apr 2026 11:20:29 +0300</pubDate>
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                    <title>Matti Siponen on NodeSet import error: "The model could not be loaded to server address space ".</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/nodeset-import-error-the-model-could-not-be-loaded-to-server-address-space/#p7544</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/nodeset-import-error-the-model-could-not-be-loaded-to-server-address-space/#p7544</guid>
					                        <description><![CDATA[<p>Hello,</p>
<p>This NodeSet is incomplete and invalid XML. It starts with the UANodeSet element as expect, but the element is missing it closing tag. Is this just the sharing site limiting the size of the shared file or is this also the case for the NodeSet file you attempted to import to Simulation Server? If the latter then naturally Simulation Server won't be able to import XML file that is invalid.</p>
<p>If the former, can you send the complete NodeSet to <a href="mailto:simulation-server-support@prosysopc.com" target="_blank">simulation-server-support@prosysopc.com</a> so that we can investigate it?</p>
]]></description>
					                    <pubDate>Wed, 29 Apr 2026 11:08:30 +0300</pubDate>
                </item>
				                <item>
                    <title>ahmad.qureshi3@se.abb.com on NodeSet import error: "The model could not be loaded to server address space ".</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/nodeset-import-error-the-model-could-not-be-loaded-to-server-address-space/#p7543</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/nodeset-import-error-the-model-could-not-be-loaded-to-server-address-space/#p7543</guid>
					                        <description><![CDATA[<p>Hello,</p>
<p>I have these models in nodeset on this link <a href="https://sharetext.io/mvtho539" rel="nofollow" target="_blank">https://sharetext.io/mvtho539</a> , when I try to import it I get error from Prosys simulation server "The model could not be loaded to server address space". </p>
<p>Probably there is something missing or wrong with the nodeset.</p>
<p>Please can anyone help to understand what is missing or wrong with the nodeset?</p>
<p>Thanks &#038; regards!  </p>
]]></description>
					                    <pubDate>Tue, 28 Apr 2026 20:01:40 +0300</pubDate>
                </item>
				                <item>
                    <title>ahmad.qureshi3@se.abb.com on NodeSet import error: "Invalid string representation of a nodeId: ".</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/nodeset-import-error-invalid-string-representation-of-a-nodeid/#p7537</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/nodeset-import-error-invalid-string-representation-of-a-nodeid/#p7537</guid>
					                        <description><![CDATA[<blockquote class="spPostEmbedQuote">
<p><strong>Matti Siponen said </strong><br />
Hello,</p>
<p>Can you send the NodeSet to <a href="mailto:simulation-server-support@prosysopc.com" target="_blank">simulation-server-support@prosysopc.com</a> so that we can investigate it?  </p>
</blockquote>
<p>Thanks for your reply. NodeSet is sent to <a href="mailto:simulation-server-support@prosysopc.com" target="_blank">simulation-server-support@prosysopc.com</a></p>
]]></description>
					                    <pubDate>Tue, 21 Apr 2026 14:36:53 +0300</pubDate>
                </item>
				                <item>
                    <title>Matti Siponen on NodeSet import error: "Invalid string representation of a nodeId: ".</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/nodeset-import-error-invalid-string-representation-of-a-nodeid/#p7536</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/nodeset-import-error-invalid-string-representation-of-a-nodeid/#p7536</guid>
					                        <description><![CDATA[<p>Hello,</p>
<p>Can you send the NodeSet to <a href="mailto:simulation-server-support@prosysopc.com" target="_blank">simulation-server-support@prosysopc.com</a> so that we can investigate it?</p>
]]></description>
					                    <pubDate>Tue, 21 Apr 2026 11:27:13 +0300</pubDate>
                </item>
				                <item>
                    <title>ahmad.qureshi3@se.abb.com on NodeSet import error: "Invalid string representation of a nodeId: ".</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/nodeset-import-error-invalid-string-representation-of-a-nodeid/#p7535</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/nodeset-import-error-invalid-string-representation-of-a-nodeid/#p7535</guid>
					                        <description><![CDATA[<p>Hello,</p>
<p>I am importing nodeset file in the prosys simulation server. The server reported error: "Invalid string representation of a nodeId: ".</p>
<p>Is possible to find out which nodeId prosys simulation server is refering, so it can be easy to identify the error? </p>
<p>Are there any logs for nodeset import which can be analyzed to find the Invalid string representation of a nodeId?</p>
<p>Thanks !</p>
]]></description>
					                    <pubDate>Tue, 21 Apr 2026 02:16:07 +0300</pubDate>
                </item>
				                <item>
                    <title>Jouni Aro on Adding attributes (auth) to methods in the Object tab.</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/adding-attributes-auth-to-methods-in-the-object-tab/#p7476</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/adding-attributes-auth-to-methods-in-the-object-tab/#p7476</guid>
					                        <description><![CDATA[<p>Sure and thanks for the feedback. This is something that we should consider to add in a future release.</p>
]]></description>
					                    <pubDate>Thu, 19 Mar 2026 13:34:28 +0200</pubDate>
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				                <item>
                    <title>mithun on Adding attributes (auth) to methods in the Object tab.</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/adding-attributes-auth-to-methods-in-the-object-tab/#p7475</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/adding-attributes-auth-to-methods-in-the-object-tab/#p7475</guid>
					                        <description><![CDATA[<blockquote class="spPostEmbedQuote">
<p><strong>Matti Siponen said </strong><br />
Hello,</p>
<p>Method Nodes do not have AccessLevel and UserAccessLevel Attributes. Are you referring to Executable and UserExecutable Attributes?</p>
<p>Regardless, Simulation Server doesn't currently allow setting values for AccessLevel and UserAccessLevel Attributes of Variables or Executable and UserExecutable Attributes of Methods.  </p>
</blockquote>
<p>Thank you. Would it be possible to request the access control feature for the sim server.</p>
]]></description>
					                    <pubDate>Wed, 18 Mar 2026 18:02:27 +0200</pubDate>
                </item>
				                <item>
                    <title>Matti Siponen on Adding attributes (auth) to methods in the Object tab.</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/adding-attributes-auth-to-methods-in-the-object-tab/#p7474</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/adding-attributes-auth-to-methods-in-the-object-tab/#p7474</guid>
					                        <description><![CDATA[<p>Hello,</p>
<p>Method Nodes do not have AccessLevel and UserAccessLevel Attributes. Are you referring to Executable and UserExecutable Attributes?</p>
<p>Regardless, Simulation Server doesn't currently allow setting values for AccessLevel and UserAccessLevel Attributes of Variables or Executable and UserExecutable Attributes of Methods.</p>
]]></description>
					                    <pubDate>Wed, 18 Mar 2026 10:28:35 +0200</pubDate>
                </item>
				                <item>
                    <title>mithun on Adding attributes (auth) to methods in the Object tab.</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/adding-attributes-auth-to-methods-in-the-object-tab/#p7473</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/adding-attributes-auth-to-methods-in-the-object-tab/#p7473</guid>
					                        <description><![CDATA[<p>Hi, </p>
<p>I am able to add methods in the Object tab to a folder, but I am not unable to add or set attributes like 'AccessLevel' or 'UserAccessLevel' to allow only authorized calls on the method nodes.<br />
Is attributes for methods specified in the protocol?<br />
If so, is this supported by the implementation?<br />
If not, is there a recommended workaround to achieve this?</p>
<p>Thank you!<br />
Mithun,<br />
Tridium Inc.</p>
]]></description>
					                    <pubDate>Tue, 17 Mar 2026 18:53:28 +0200</pubDate>
                </item>
				                <item>
                    <title>Matti Siponen on Prosys OPC UA Simulation Server fails to register with Local Discovery Server (LDS) – SecureChannel invalid / connection closed</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/prosys-opc-ua-simulation-server-fails-to-register-with-local-discovery-server-lds-securechannel-invalid-connection-closed/#p7470</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/prosys-opc-ua-simulation-server-fails-to-register-with-local-discovery-server-lds-securechannel-invalid-connection-closed/#p7470</guid>
					                        <description><![CDATA[<p>Hello,</p>
<p>The certificate and the private key of Simulation Server were updated in version 5.3.0 (see <a href="https://downloads.prosysopc.com/opcua/simulationserver/Prosys_OPC_UA_Simulation_Server_5_Release_Notes.html#version-5-3-0" rel="nofollow" target="_blank"><a href="https://downloads.prosysopc.co" rel="nofollow">https://downloads.prosysopc.co</a>.....sion-5-3-0</a>). Therefore, updating from 5.0.4 to 5.6.0 would also cause the application to switch its certificate. Please, make sure the the LDS trusts the new certificate and try again.</p>
]]></description>
					                    <pubDate>Thu, 05 Mar 2026 10:10:05 +0200</pubDate>
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				                <item>
                    <title>srijithvijay on Prosys OPC UA Simulation Server fails to register with Local Discovery Server (LDS) – SecureChannel invalid / connection closed</title>
                    <link>https://forum.prosysopc.com/forum/opc-ua-simulation-server/prosys-opc-ua-simulation-server-fails-to-register-with-local-discovery-server-lds-securechannel-invalid-connection-closed/#p7469</link>
                    <category>OPC UA Simulation Server</category>
                    <guid isPermaLink="true">https://forum.prosysopc.com/forum/opc-ua-simulation-server/prosys-opc-ua-simulation-server-fails-to-register-with-local-discovery-server-lds-securechannel-invalid-connection-closed/#p7469</guid>
					                        <description><![CDATA[<p>I updated from Prosys Server v5.0.4 to v5.6.0 and am using the Local Discovery Server provided by the OPC UA Foundation at: <a href="https://opcfoundation.org/developer-tools/samples-and-tools-unified-architecture/local-discovery-server-lds/" rel="nofollow" target="_blank"><a href="https://opcfoundation.org/deve" rel="nofollow">https://opcfoundation.org/deve</a>.....erver-lds/</a></p>
]]></description>
					                    <pubDate>Thu, 05 Mar 2026 09:09:45 +0200</pubDate>
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