OK so I must be missing something really simple but been over my settings a couple of times now & something is still missing, my memory isn't what it used to be
I had my machine set up so the spindle was controlled through the software, VFD is controlled via rs485, I would start the probram & relay 1 which supplies the power to spindle would close so power on VFD & spindle was ready to run.
The control computer suffered a HDD failure just recently, HDD has been replaced & there have been a few changes but none that I can see would make a difference, now running windows 10 rather than 7 which shouldn't make any difference. Downloaded & installed the latest version of UCCNC which is different from the version I was running but again wouldn't have thought that would make a difference so there must be something I haven't done when setting up my machine in the software, as the old HDD was toast I couldn't copy any of my previous settings so had to start from scratch, just can't seem to close this relay on the software start up
Oh the other thing that has changed was the spindle/vfd plugin version, think it may have been 8 before but now it is v12 ut the settings fopr the vfd appear to be the same as for the older plugin