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Create array structure for server
February 13, 2022
13:05, EET
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February 13, 2022
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Je voudrais savoir comment créer une variable tableau de type Structure dans un serveur.
j’utilise le composant “Prosys Sentrol 7.4 OPC UA Delphi SDK Server” avec “Delphi 10.3”.
I would like to know how to create an array variable of Structure type in a server.
I am using “Prosys Sentrol 7.4 OPC UA Delphi SDK Server” component with “Delphi 10.3”.

Je vous propose cet exemple pour une explication :
I offer this example for an explanation :

MyStructure = record
Var1: Word;
Var2: Word;
MyArrayStructure: array[0..9] of MyStructure;

Merci d’avance.
Thanks in advance.

February 14, 2022
16:20, EET
Ari-Pekka Soikkeli
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February 14, 2022
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Assuming that specification of your structure can be found in the Nodeset you can create your structure with the DynamicStructureBuilder (you can see an example on how to use DynamicStructureBuilder in the UaSampleServer sample method CreateMyStructureValue). Then you can create an array of your structure like so:

MyStructureArray := MyNodeManager.CreateVariable(‘MyStructureArray’);
MyStructureArray.DataTypeId := MyStructureTypeId;
V := VarArrayCreate([0, 9], varVariant);
// VarStructureCreate is in the unit ProsysOPC.UaVariants
V[0] := VarStructureCreate(CreateMyStructureValue);
V[1] := …;
MyStructureArray.Value := TUaVariant.Create(V);

February 16, 2022
11:16, EET
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February 13, 2022
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Bonjour Ari-Pekka Soikkeli,

Tes informations m’ont beaucoup aidé.

Hello Ari-Pekka Soikkeli,

This information helped me a lot.
Thank you.

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