FANUC A20B-2902-0250 PMC-NB2 command module. This control module is installed on several larger systems such as 15B / 16C. The 2902-0250 provides NB2 features in order to run large ladders for complicated CNC machine tools either running a 15-MB or 16-MC via the on board PMC. A20B29020250 pcb is available today, either as exchange or on an outright basis stock dependent with full testing and repair services are available also. Warranty is 180 days on repair or exchange!