you have to customize the buffer command. For this activate debugging (Show where Output...) in Post Configurator:
In the posting output you now get a lot of information what is called, which template is executed and which Buffer. So you have to copy the buffer you want to change to your service tcl-file. The Tag_Info indicates the outputted nc lines.
Now replace the @ROTARY_POSITIONING Tag with your own procedure and internal buffer commands: