Here is an OSCII-bot Logger (I started from the supplied basic.txt) that you may finds useful.
You'll need a few edits to adapt it to your system:
(a) change the string ("Mix") on the @input HW_IN line to match (part of) your Control Surface device name
(b) change the HW_name too,
(c) comment out any of the 4 @input lines if you do not want them.
Then just put it in the AppData\Roaming\oscii-bot folder (that's on Windows). It will run in parallel with your Control Surface script.
(with annotations)