HBS57 and oval circle issues.

Have just one idea - to check with oscilloscope communication of this driver.
As i understood from sellers page its RS232 communication port there.
But what then to do with this information is a Question.

Today gor note from seller at Aliexpress about this driver
It is from JMC-Motors-China..
Drivers of this producent have special hard panel to tune parameters.
Titled HISU adjuster i order this item from this page 
Here your can find PDF with parameters - publikz.com/blog_47321
Waiting now as it arrive ...

great! please report! i´m interested for this