Hi Jack,
I see that there is a small time gap before the Data-Store Read block 'reads' the data from the data store memory. This is because there might be a Read operation from the DataStore Read block, before the Write operation from the DataStore Write block.
To check if this is the issue in your model,
1. You can turn the parameter 'Detect Read before Right' in the Model Configuration Parameters > Diagnostics > Data Validity > Data Store Memory block pane, to 'error' out. This configuration is set to 'warning' by default.
2. You can see the order in which the blocks are executed using the Execution Order under Information Overlay in the Debug tab in Simulink toolstrip.
To overcome this issue, some of the workarounds are:
Hope this helps.
