[Bug]: OPCUA server and OPCUA failed to read data

[kdxq]

What happened?

uaExpert can read data,just like follow;

I use opcua-server,config as follow:

and the opcua server init. seems ok.

and use opcua to read data from opcua-server, code as follow

but the FanSpeed return Null

what's wrong? @splatch please give me some suggest, waiting for your replay, thank you very much!

Version

v0.12.0

Programming Languages

• [X] plc4j
• [ ] plc4go
• [ ] plc4c
• [ ] plc4net

Protocols

• [ ] AB-Ethernet
• [ ] ADS /AMS
• [ ] BACnet/IP
• [ ] CANopen
• [ ] DeltaV
• [ ] DF1
• [ ] EtherNet/IP
• [ ] Firmata
• [ ] KNXnet/IP
• [ ] Modbus
• [X] OPC-UA
• [ ] S7