Usage
The values of variables used in SPEL+ programs can be read by the OPC UA Client.
The specifications of SPEL variables that can be read by the OPC UA Client are shown in the table below.
| Items | Specifications |
|---|---|
| Variable memory type | Only variables declared in Global Preserve (backup variables) |
| Variable type | Support all SPEL+ types |
| Array type | Not supported |
| Access type | Read Only |
| Maximum quantity | 256 |
| Variable naming rule | The prefix “OPCUA_” must be present |