Hi David Jupp. Thanks for the link to the website, VERY much appreciated as I was completely unaware of the availability of this software. I don't have an RS232-485 converter, but I'll soon build one!! Being able to "talk" to the device is a good start. (I wish I had the schematic for the Programming Key, I'd make one of those too).
Hi Neil Wyatt. I have digital and printed copies of the manual, thanks. The only physical "switch" is a jumper on the front panel, which isn't for the Jog function. The manual says the default configuration for IN4, connector 11, is for "Jog", but why it would then be disabled by default is beyond me. Page 27 top and middle tables document this. Hopefully once I make the RS232-485 converter I can work out the changes required.
Thanks both of you, invaluable help!