Help connecting servos to breakout board Mach3

[Agathon]

you need to keep on eliminating reasons and i can tell you straight away that i would never use USB-RS232 converter for connecting to servos, or anything. . You need a normal. PC with a normal PCI port and an adapter there. Or even better, a PC with a com port that you could control from bios.


Standard RS-232C RS-422A

specifications
Communications
method
Asynchronous (ASYNC)
Baud rate 2,400 bps
Start bits 1 bit
Data 8 bits
Parity None
Stop bits 1 bit

That above is from your servo drive manual. If baud rate is not set at Com port same same, communication will NOT ever happen



And most of all check that manual https://www.fa.omron.com.cn/data_pdf...8d-u.pdf?id=68 for the proper connection to the drives from the PC side . Check your cabling if is right.


So in other words from page 1-7 seems you need Null Modem Cable https://www.decisivetactics.com/supp...h-serial-cable

Many thanks Boyan - that's really helpful. I'll check all the above. I do have a PC with a RS-232 port and have tried connecting with that, but I didn't check any of the settings. I'll check the cable too.

[Clive S]

I do have a PC with a RS-232 port and have tried connecting with that, but I didn't check any of the settings. I'll check the cable too.

you will have to make sure the baud rate is the same at both ends also start and stop bits are correct, the handshaking might be xon/xoff (ie software handshaking). You might also have to swap pins 2 and 3 over at one end this depends if the Pc is setup as DTE or DCE. one good thing about the com port is that it is hard to break

[Agathon]

you will have to make sure the baud rate is the same at both ends also start and stop bits are correct, the handshaking might be xon/xoff (ie software handshaking). You might also have to swap pins 2 and 3 over at one end this depends if the Pc is setup as DTE or DCE. one good thing about the com port is that it is hard to break

Thanks Clive, I'll take a look at all the things Boyan mentioned. I'll check the PC DTE or DCE settings - I'll buy a cable that I can alter the connections on.