Problem with Dyna 2400 CNC milling machine (ARC Problem)

I am having problems sending code to my dyna 2400. The problem occurs
when I send the dyna code in "line execute" mode, also known as incremental
mode. The machine works fine unless the line of code that is passed is an
ARC statement. When the ARC statement is passed to the machine, the machine
cuts circles which are obviously larger than the code intended. There is no
error reported from the dyna and the machine continues to process the code.
What is seen on the dyna display when this occurs is "700 ARC.******" Where
there is a period following the ARC and the asterisks represent boxes. I
think that the boxes might represent a char which the dyna cannot display.
The really odd thing about this problem is that if I just download the
code to the dyna and run it (i.e. not using line execute), there is no
problem and the ARC statement shows up correctly as "700 ARC".

ANY ideas would be welcome.

Thanks,
Elliott Crain



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