I haven’t seen any documentation on the deep capabilities of the Parallel CNC module but I wanted to know if it supports acceleration and deceleration profiles for the stepper motors.
Not yet but that is software. With community contributions, we can take this module as far as we want.
Hi Guys
Sorry to butt in here. I have just found this product and am thinking it possibly will save me quite a bit of effort.
I am wanting to build a CNC control for a special purpose CNC Laser marker (6axis). I am using AC servo motors to drive my axis. I can control my drives through step and direction pulses, but I need huge step rates. I am wanting to be able to process a minimum of 150K steps per second.
My question is will this board be able to handle these step rates???
I have modified the EMC GCode Compiler, so that it spits a text file listing the number of pulses/steps to execute within a 1ms time period as listed below.
motion id 134
0 -29 0 0 0 0
0 -31 0 0 0 0
0 -33 0 0 0 0
motion id 134
0 -34 0 0 0 0
0 -35 0 0 0 0
0 -37 0 0 0 0
motion id 134
0 -36 0 0 0 0
0 -38 0 0 0 0
0 -38 0 0 0 0
motion id 135
0 -38 0 0 0 0
0 -37 0 0 0 0
0 -38 0 0 0 0
motion id 135
0 -37 0 0 0 0
-1 -36 0 0 0 0
0 -35 0 0 0 0
motion id 135
-1 -34 0 0 0 0
-1 -33 0 0 0 0
-2 -31 0 0 0 0
This code takes into acount all the EMC gcodes, as well as accel and decel, backlash etc etc. I was thinking of preprocessing all the gcode on my pc and then send the new file to an sd card on the main processor board via an ethernet link.
But it all revoles around whether I can get the step rates I require.
Best Regards
Andrew