The scale of 1 for position error is correct, this will give you counts.

I hope you have seen scope plots sent you yesterday.
As how I can see position error's levels lower than 1 count?!

Yes, you likely have the scale in the Watch set to something other than 1.

As what's variable inside Watch window I must change for see correct position error values exactly?
I have expected that defending of 1 counts/div inside Scope window will be enough...

The scale in the Scope is different than the scale that is set in the Watch. The scale in the scope is showing you how many units/division are displayed on the graph for a given source. The scale in the Watch defines how the raw data is scaled and then shown in the data record (Watch and Scope).

But I ask about Scope scale only. I expect that defining Scaling factor equal 1 counts/div, Scope will show steps in 1 div because resolution is 1 count.
But I see steps significant lower than 1 div!

Set the scale in the Watch to 1, then if you set the scale in the Scope to 1, you will get 1 count/div.

As I specified in the previous post: The scale in the Watch defines how the data from the data record is scaled. The scale in the Scope defines the units/division that is displayed while displaying the data record data.

If you are still having difficulty, respond back to the e-mail that I sent you.

OK!
Yes I found that Scale in Watch for the same variable _TEA is 64 and Scope's scale must be re-calculated as 64count/div.

But it is reasonable to assume that Scope is independent tool with Scaling definition inside Scope window only!

Scaling is a function of the GalilTools project, not the individual tool.