Dynomotion Forum

Wow very impressive. But its not clear how modbus or can bus would do smooth coordinated motion. Normally the communication time is relatively long. So its not clear how something like a command of "go here" every few milliseconds would work. I don't see any specification on the can bus or modbus co...

Hi Noel, It looks like both absolute and incremental signals are available. Do you need the absolute position? If so you can probably bit-bang the position into KFLOP. (Toggle clock in software while reading data bit). Similar to the SPI V6.c Example. Maybe read it once on power up to synchronize th...

Hi Gerald, It seems Can Bus is very specialized with longer data frames, collision detection, CRC, NRZ with bit stuffing, etc. Kogna has significant space available in its FPGA so I suppose a controller could be implemented. Here is one on Github: https://github.com/keesj/can-hdl/tree/master Here is...

KMotion/KFLOP/Kogna Version 5.3.8 Released This update addresses a critical issue related to compiling and downloading C programs to Kogna. Previously, each firmware version check left a file open, which caused the application to reach the file descriptor limit after 512 version checks. This limitat...

Hi Roberto,

Yes we should be able to.

Hi Roberto,

That file is required for KMotionCNC to function properly. I suppose we could make a change to also look for it in the location of KMotionCNC.exe.

Hi Jim, Before emailing you, I experimented quite a bit with acceleration, reducing it considerably without noticable effect. To what value was it reduced? I have the Max following errors set high to allow for rapid jogging during set up and tool changes - well beyond any feedrate that I might use w...

Hi Wayne,

Thanks for taking the time to post back.

Hi Jim, Here are some thoughts: The Look ahead/Buffer time is only 0.05 seconds. This should normally be at least 1 second. The Max Following error setting of 5000 counts corresponds to ~0.02 inches. This is relatively large so if the axes aren't following the trajectory precisely there wouldn't be ...

Hi Jim,

Hmmm, maybe a lag in the axis positions?

Are the Steppers Closed loop in KFLOP or the Drives?

Please post your Configuration file GCodeConfigCNC.txt, the Initialization C Program, and the GCode and we can look into it.