Bill--I'm actually not sure that there is an upper limit--however there may be a significant lag while the tool converts the ShopBot Code to G-Code...which isn't noticeable with smaller files because it happens so quickly.
However--there's a sort of work around that you might try...If you download the old-school control software from www.shopbottools.com There is a "File Conversion" utility under the "file" menu--it will let you select an SBP file and convert it to GCode.
The difference would be that the conversion was taking place on the much faster processor of your PC rather than the Intel Edison chip. Then you could load the gcode file into fabmo--and likely get a quicker response from the tool.
We're working on eliminating the lag...but for now this could help!
Added note: you'll need to add a little bit of code to the top of the file to turn the spindle on and pause while it spins up.
simply add the following:
m4
g4p2
Edited 1 time(s). Last edit at 09/28/2017 02:25PM by Brian Owen, ShopBot.