I have a question to everyone who knows about this control. (Meldas 500)
I had a problem with parameter and had to Initialize the control.
As I also have problem with the rs232 port i can not upload the parameters. so i have to input them by hand. but after i did the Initialization only axis x appear. also in the parameters I just have the rows for the x axis to input the parameter in. y and z don t show.
As well only 9 out of the 40 pages for the spindle parameter appear.
I don't know the answer, but Mitsubishi may have the manuals for your vintage control available for download on their website. On the docs for my M3 control, the information on how to configure the serial port function, baud, stop, parity, are all detailed. It isn't very easy reading, to be honest, but it is there. Sadly, My M3 control is likely not the same as yours 500, so I don't think I can really provide you with further assistance.