Do input tag values keep updating after SP execution begins?

In my facility we use PLC's to trigger SQL Stored Procedures through a Kepware server. Most of these SP's are for data collection.

If I set the execute bit to true, but then one of my data collection points changes value before the execution finishes, does the SP see that data change? Or is it just using the value as it was at time of execution start?

Thanks for your help in advance