[Shopman14]

New to me machine(Fadal VMC15): 1994/88HS/1405-A/422K ram. To run large programs, I bought an USB-interface box. I installed(right inside of the Control Panel Box(with amps, etc.) so as to eliminate cable issues. My controller can see my USB removable stick and the various programs on it. When I use the "DNC" command to run a program, all is good for the first 100-to-150 lines of the program. The spindle stops moving(while engaged with "NOT-work piece", as I'm testing "Cutting air")and the controller says "RS232 error" and other attempts says "DNC Error". My baud rate is 19,200. [When I first installed my USB-interface box, I ran the 3-meter cord from Control Box to Controller and worked my way through the various baud rates(making sure USB-interface box's baud equaled controller's baud rate)]
Kinda running out of things to try, okay, I did run out of things so any help would be greatly appreciated.

[machinehop5]

...there are some do's n don'ts when DNC is used. Read more here Commands>DNC page 317
https://www.fadalcnc.com/media/pdf/t...unications.pdf


a.NO O word program identification numbers are allowed.
b.NO comments are allowed.
c.NO user defined subroutines (L01-L89) are allowed.
d. Fixed subroutines are allowed during DNC.
e. Sequence numbers are optional.
f. The program should be ended with either an M0 or with NO code at all.
g. Macro statements (see Section 18) ARE allowed


What Brand model number is your DNC box?

[rodney247]

Use the DNCX command

do a MU and go to page 9

[warrenb]

check your grounding. I had a lot of problems with the same error in my old shop. In the new shop all the issues went away with a better electrical system.

Also double check the controller and you USB interface have matched communication parameters