node-red-contrib-node-browseName

A simple node that attaches browseName to msg.topic for opc-ua node when it doesn't exist.##

Description

当opc ua client 读取多个节点时,首先向ua 客户端增加节点，这时消息的topic中包含节点的browseName。如：

{"_msgid":"647ce35a9062c3a7","payload":1665641675806,"topic":"ns=1;i=1456","datatype":"Double","browseName":"LevelLowLimit"}

但ua client 读取多个节点的结果中，不再包含browseName而仅仅包含ua node的id。如：

{"topic":{"nodeId":"ns=1;i=1456","attributeId":13,"TimestampsToReturn":2},"payload":0.2,"serverTimestamp":"2022-10-13T06:14:50.018Z","sourceTimestamp":"2022-09-15T08:47:46.760Z","_msgid":"7033fb78538da981"}

这样，在进一步导出数据或者处理时，难以区分数值的含义，通过本attach-browseName节点，可以为消息添加browseName，如:

{"topic":{"nodeId":"ns=1;i=1447","attributeId":13,"TimestampsToReturn":2,"browseName":"TankLevel"},"payload":0.916998697044078,"serverTimestamp":"2022-10-13T06:14:50.018Z","sourceTimestamp":"2022-10-13T06:14:49.887Z","_msgid":"e6e6c160537c8c97"}```

Installation

Install from github

npm install git+https://github.com/yinjilong/node-red-contrib-node-browseName.git

npm install git+https://github.com/yinjilong/node-red-contrib-node-browseName.git

Example

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