A20B-3300-0033
Fanuc A20B-3300-0033 servo controller. This servo card is a 2 channel axis controller utilising the FSSB interface system. FSSB stands for Fanuc Servo Serial Bus and allows data communication between the CNC control in this case the i series and servo amplifier modules.
This card is found on earlier model A and B generations controls such as the 16i, 18i and 21i systems. Normally fitted upon the main board on the integrated type i series controllers.
DNC currently stock this dual axis FSSB servo control interface for i series.