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| const opcua = require("node-opcua"); | |
| const userName = "user1" | |
| const password = "password1" | |
| //xx const endpointUrl = "opc.tcp://192.168.249.31:4840"; | |
| const endpointUrl = "opc.tcp://localhost:26543"; | |
| //xx const nodeId = "ns=4;s=opctest1_Copy1"; | |
| const nodeId = "ns=411;s=Scalar_Static_UInt16"; | |
| async function CreateConnection(){ | |
| console.log('Trying to connect ...'); | |
| const client = new opcua.OPCUAClient({endpoint_must_exist: false }); | |
| await client.connect(endpointUrl); | |
| console.log('Connected!'); | |
| const session = await client.createSession({userName: userName, password: password}); | |
| let dataValue = await session.read({nodeId: nodeId }) | |
| console.log(dataValue.toString()); | |
| const nodeToWrite = { | |
| nodeId: nodeId, | |
| attributeId: opcua.AttributeIds.Value, | |
| value: /* DataValue */{ | |
| statusCode: opcua.StatusCodes.Good, | |
| value: /* Variant */{ | |
| dataType: opcua.DataType.UInt16, | |
| value: 1098 | |
| } | |
| }, | |
| } | |
| let risultato = await session.write(nodeToWrite); | |
| console.log(risultato.toString()); | |
| dataValue = await session.read({nodeId: nodeId }) | |
| console.log(dataValue.toString()); | |
| await client.closeSession(session,true); | |
| await client.disconnect(); | |
| }; | |
| CreateConnection(); |
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