S71200 and V90 via technology objects

Discussing with @TechTeam I learned that when I'm using technology objects (TO_PositioningAxis)

in S71200 position control is happening in PLC. Regarding that S71200 doesn't support IRT, only

RT and that minimal Real time setting-> IO communication is 1ms and MC-Servo(OB91) minimal

cycle time is 1 ms and i'm interested in value of drive encoder, how often I can access that value?

My use case is following:

I tell drive to move motor into position and during motor motion hardware interrupt has happened on

digital input. Interrupt is captured and interrupt OB is called and inside that OB I record encoder

value for further processing.

This encoder value get updated in process image every 1ms or every new cycle scan (lets say 15ms)?

And other thing is if MC-Servo cycle time is 1ms this means that position regulator is doing

control every 1 ms?

Thanks in advance.

I don't have actual hardware (V90) with me, but I can set in TIA Portal bus cycle time of 1ms.

What I can't find (understand) from documentation is with RT communication position values (I

believe that at the end this is information from encoder) in PLC can be seen (updated) every PLC

cycle time(example 20ms), not every bus cycle time(example 4ms) ?