The ETH catalog lists these accessories for use with the Compax3:
These parts are not available for sale in North America as standard.
The 085-20208 is a 15pin HD connector. These a generally available from electronics stores.
The VM15-FC-02 is a cage clamp terminal block (no LED indicators) and includes a 2-foot female cable to connect to the C3 x12 I/O connector (male). This could be used in place of terminal blocks EAM06/01 and EAM06/02 and the cable SSK24/...