Onchange of Modbus value

I’m testing how fast i can log a value from a PLC using Modbus TCP.
With the IOservers Poll rate set to 200ms, I’m almost keeping up with a value that I know is changing every 300ms. That’s good enough for me.

What I realized though is that the log file do not show milliseconds.
Can that be changed?

Unfortunately we don’t have the ability to be more exact than seconds with the Flexys historical log