Control Boards
I/O Board plus Expander Board
The Viper’s control system I/O circuit board controls all input/outputs except for the motors. The I/O board communicates with the user interface, the motor control board and the status boards to carry out its programmed functions.
The two flavor Viper utilizes the base I/O board. And for the three and four flavor Vipers an expander board is mounted to the base I/O board to extend the ability of the I/O board to operate the additional barrels.