When sending a file to my "new" lathe it errors every time. I get the
first 500 bytes of the file then it quits and gives errors 110049 and
110058. " check interface parameterization" and "transfer aborted"

I tried used Bobcad V21 and AGGsoft DNC Precision, both give the same
results. I tried with software Xon/Xoff and Hardware RTS/CTS with the correct cables.

The part of the file that does go through looks fine and will run.

any suggestions?

Hyundai HIT-18S
Siemens 840C