


** 2026-05-12 13:47  switch to  5.84 and restart 
** 2026-05-12 14:02  switch to  5.83 and restart 


# target Ip: 

```
opc.tcp://10.10.100.121:4840
opc.tcp://10.10.100.120:4840
opc.tcp://10.10.100.113:4840
opc.tcp://10.10.100.112:4840   
```


Problem description
(1) use ver 5.84 ,cann't subscrible tags,but OPC_Srv_ConditionChanged.log display "connected" ; 
(2) use ver 5.83 ,can subscrible tags and received valueChanged;（But sometimes the machine fails to reconnect)







