Personally, I have an EQ6-R Pro mount, and I program PEC into the mount using PEMPro on Windows. I literally have an ancient laptop with Windows 7 on it that I keep around only for the occasional PEMPro run. I never use it otherwise.
After PEC is programmed into the mount from the Windows software, I then reattach my KStars/INDI system, enable PEC in the EQMod control panel, and it works well after that.