Quote Originally Posted by m_c View Post
You really need to know how the drives are set before you can test them.
However a quick look at those pinouts, and if you apply all the required power inputs, activating the RUN pin should at least get the servo to lock, however that depends on the related settings having not been changed from the default where activating the pin enables the servo.
Thanks, I see what you mean, there are so many parameters that could have been changed. Having looked through the manual a little further I think I need to short pin 34 and 35 before the drive will do anything at all.

It's critical that I get the software interface to work - I think that there's something funny going on with the USB-RS232 converter I have, the Yaskawa software seems to think it's a RS-422 port.

I just need to keep buggering-on buggering-on until I get there.