If the card shows the ERR LED flashing with two flashes, a CRC error has occurred in the internal memory. This error is persistent and can be deleted.
The procedure for cancellation is :
Turn on the RosettaCNC board with the FUNC button pressed.
The board starts up in a special way and LED L1 lights up.
If the error is present, LED L1 flashes.
Pressing the BOOT button for 2 seconds starts a procedure to clear the error. In addition, the POW led starts flashing to indicate that the selected function is running.
When the execution of the function ends, the POW led stops flashing.
Restart the RosettaCNC card
At the first connection with the RosettaCNC software, if different parameters are intercepted, always answer DONWLOAD (The data in the PC are valid)