Originally Posted by
he1957
The USB memory stick is just that. Plug it into your Windows PC and using File Manager, Right click it, select "Properties", "Tools" and you can try "Error Checking" to fix it, otherwise try formatting it as FAT-32.
I don't have an A15 controller (have an A11) but AFAIK the RichAuto DSP handles are all quite similar. On the bottom where the main 50 pin cable connects, there should be a USB type B connector. This lets you connect the DSP to your PC and can also provide power if your PC can deliver enough.
Leaving the CNC machine off and connecting the PC and DSP, the DSP should power up normally. If it does not, try removing the 50 pin cable and try again. Be careful with the plugs as the pins are fragile.
If it does not work reliably/properly with the 50 pin connector connected then I'd look at the 50 pin cable and the BOB end. If it works properly/reliably with the 50 pin connector disconnected, then again, the cable or something at the BOB board end might be bad. Perhaps a bad power supply or a signal wire that is shorted/open. Limits, servo fault or other signal lines depending on what your machine has. Dust or other crap in the electronics or even vermin that has visited and left "calling cards".
While powered from the PC and started normally, the "System Setup" menu has a "Auto Upgrade" option. From there you can load the firmware file. The firmware filename ends in ".PKG" and can be downloaded from the RichAuto web-site. Make sure you get the correct file.
Before attempting to change the firmware, use the procedure above to get a backup of the DSP configuration file.
The configuration file contains the settings for the machine such as steps per unit for the motor/motion hardware config of your machine along with travel rapids, max movement speeds, soft travel limits, acceleration and the other parameters your machine needs.
The files you had on the USB stick (*.nc or whatever names you use) are the machining tool-path files for your parts and have nothing to do with the machine configuration.
If you hold down the "OK" and "CANCEL" buttons on the DSP and then connect the DSP to the PC, the DSP will start in "Flash Disk Mode". In this mode the DSP appears as a USB stick to the PC and you can copy files to/from it. This method also lets you put a copy of the firmware file (ending with PKG) into the DSP.
Good luck!