Hi Guys,

The first post about this plugin intrigued me so I ordered the usb to rs-485 converter and waited 2 weeks for it to come... I've finally got around to testing the setup today and I'm experiencing a similar problem to Martin. I've installed the usb to rs-485 converter and that seems to be ok. The plugin config screen is working and states that communication with the vfd has been established and pulls the max spindle speed and frequency to display them in the splash screen, so I can be sure that a connection has been made. I then try and fire the spindle up and I get a click from the vfd then mach3 is put into emergency stop situation. I've tried running from an M03 command via the MDI screen and the same happens. I've not tested with any gcode because I don't have any that I know works (not finished my machine build yet).

I have tried with the spindle wired to the vfd and without. I've tried with an old serial cable with the shield grounded to my pc case. I'll maybe try and find a bit of twisted pair cable like Jay said, see if thats any different. As for the parameters, I've done exactly as the ones provided by the guy who compiled the plugin. Oh, and I've also tried with the baud rate reduced to 4800...

Any other pointers would be helpful as I'm starting to wonder how reliable this method is going to be if its that sensitive to noise...