A Node-RED nodes to communicate or serve via OPC UA.
based on node-opcua
Run command on Node-RED installation directory.
npm install node-red-contrib-opcua
or run command for global installation.
npm install -g node-red-contrib-opcua
Use OpcUa-Item to define variables. Use OpcUa-Client to read / write / subscribe / browse OPC UA server.
See some flows under Examples. Updated server sub-flow example OPCUA-TEST-NODES.json look commands: addFolder, AddVariable, setFolder.
Here you got some ready to use examples. You can use the Import in Node-RED in the right upper corner menu.
Examples are available for Schneider IGSS and Prosys Simulation Server as Node-RED flow. Search for OPC UA on: http://flows.nodered.org/
| Property | Function/Value | Notes |
|---|---|---|
| payload | set interval for subscription or monitorItem | |
| interval | Subscription interval | |
| queueSize | Subscription queue size | |
| deadbandType | "a" abs. or "p" percent | Action monitor |
| deadbandValue | integer for deadband | Action monitor |
| topic | NodeId and DataType in format ns=3;s=Counter;datatype=Int32 | |
| action | subscribe | nodeId / variable |
| unsubscribe | nodeId / variable | |
| deletesubscription | subscription | |
| browse | nodeId / folder | |
| info | nodeId | |
| read | nodeId | |
| write | nodeId & value | |
| monitor | deadbandtype abs/pro | |
| events | nodeId | |
| readmultiple | [nodeId + datatype] | |
| writemultiple | [nodeId + datatype + value] |
readmultiple to readmultiple items writemultiple to write multiple items clearitems to empty multiple items (readmultiple / writemultiple)
| Property | Function/Value | Notes |
|---|---|---|
| payload | dataValue.value.value | |
| statusCode | OPC UA StatusCode | |
| sourceTimestamp | Source timestamp | |
| serverTimestamp | Server´s timestamp |
- needed from users (add links to examples folder)
- since 2015 Mika Karaila
- since 2016 Klaus Landsdorf
karma start opcua.conf.js --log-level debug --single-run
| Nodes | Function | Done |
|---|---|---|
| All | ||
| Project structure | ✅ | |
| Async calls | 🌒 | |
| UnitTesting | 🌑 | |
| Documentation | 🌓 | |
| Item | ✅ | |
| Browser | ||
| Browse | ✅ | |
| Simple UI interface | 🌓 | |
| Client | ||
| Read | ✅ | |
| Read Multiple | ✅ | |
| Write | ✅ | |
| Write Multiple | ✅ | |
| Subscribe | ✅ | |
| Unsubscribe | ✅ | |
| DeleteSubscription | ✅ | |
| Info | ✅ | |
| Browse | ✅ | |
| AE | 🌑 | |
| reconnect on error | 🌒 | |
| Server | ||
| Commands | ||
| Restart | ✅ | |
| Add Folder | ✅ | |
| Set Folder | ✅ | |
| Add Variable | ✅ | |
| Add Object | 🌑 | |
| Add Method | 🌑 | |
| Add Equipment | 🌓 | |
| Add PhysicalAssets | 🌓 | |
| Delete by NodeId | ✅ | |
| Examples | ||
| Methods | ||
| Structures | ||
| Variables | ||
| Objects | ||
| AE | ||
| Alarm and Events | ||
| Subscribe | ✅ | |