The error I saw was most likely my fault. I probably did not fill in the [ ] with a number.
I have since tried this again and was successful. I was able to write a short program that included the ArcOn, ArcSw, and ArcOff commands to weld (2) 1" diameter circles. I was then able to rotate the BASE and rerun the same welding commands. Everything ran as expected.
Thanks for your patience.