You cannot connect the C22 directly to the AXBB as it requires a DB25 or UDC26 connector that uses pins 2-9 as inputs and the connector on the AXBB uses pins 2-9 as outputs as outputs. Maybe you can use a C22M1 instead, which communicates through USB: cnc4pc.com/serial-modbus-pendant-interface-card.html

The pendant plugs into a C22 board which is connected to any motion controller with a DB25 or IDC26 style connectors and uses pins 2-9 as inputs: www.cnc4pc.com/pub/media/productattachments/files/mpg2_c22.jpg