RS232 Error during DNC

[impexio]

I have an old 1983 Fadal VMC-40 with the keyboard mounted to the right of the screen (CNC 88). I am able to send programs to it with the RS232 but I haven't been able to run it in DNC. I have messed with all of the Baud Rates but nothing works. When I use the baud rate of 2400 it looks like the DNC is about to work but when I hit the start button I get the "RS232 Error". Any ideas??

[denmar]

Is the CPU 1400-1/2?

[impexio]

Denmar,
How do I find out if my CPU is /1 or /2?

[denmar]

go to last page of the menu

[impexio]

I checked the CPU for my 1983 blue VMC-40 and it's a 1400-2.

[DareBee]

If your serial adapter on the PC is flakey it will operate like that.
I have seen USB adapters that will send text but not work for DNC as well

[impexio]

Thanks DareBee. I don't think it's the serial adapter on the PC because I am able to run my newer (1988) fadal via DNC. And I do this using the same serial to USB adapter. Does this make sense?

[denmar]

Early 80's Fadal machines had a 200 Baud phone moden to comunicate with pcs(teletypes); the 1400-2 Cpu was the upgrade for the 1400-1; so the baud was incresed to 1200. consecuently no Usb at the time.Early 90's came the 1400-3, didn't work, so move to 1400-4; with greater baud rates.

[impexio]

Thanks Denmar. So is the 1400-2 capable of running in DNC mode? Or is the CPU simply too slow to communicate back and forth?

[DareBee]

Maybe, maybe not.
I lied to myself for years the my USB adapter was doing its job.
Most of the miscues from it only broke cheap cutters and simple parts anyway .
Once I realized that $80 got me a native serial card I stopped being a doughead.

Just sharing, not being mean