ArtBus computer interfaces for art, design, and multimedia

The error codes are for viewing in a terminal window during troubleshooting. If the red LED comes on, say on ArtBus bug at address B, you can see the error cause by stopping the bus master and sending !Bx; in a terminal program. The error value will be returned to the terminal. If the red LED comes on, reset the ArtBus bug by sending !Bz; or by pressing the reset button.

Errors values add. A buffer OVERFLOW, 1 and a UNDERFLOW, 2 together would cause error_last to have the value 3

OVERFLOW	00000001	buffer overflow flag	1
UNDERFLOW	00000010	buffer underflow flag	2
TIMEOUT_FLG	00000100	ser in timeout flag	4
BAD_CMD	00001000	invalid command	8
BAD_VAL	00010000	bad param value	16