About updating cache after writing
In the tag settings, you can set whether or not to immediately overwrite the value in the internal cache when a write to PLC is successful.
▪If checked (default)
After writing is successful, an event such as ValueChange will occur. Also, when retrieving the value using the Value property, the value after writing will be passed.
▪If not checked
Events such as ValueChange will not occur until the next read communication with PLC is performed. In addition, the value of the Value property will return the previous value until the cache is refreshed by the next read communication with PLC.