In addition to the cable adapter, you will also need the appropriate software for the application....Cummins, Cat, Bendix, Allison, etc. for your specific components. This can get quite expensive, and in some cases the MFGs. will not sell software to the end user.
Another alternative is an aftermarket scantool such as the MPSI ProLink 9000. The ProLink uses data cartridges for each application that plug into the unit. These units show up on Ebay quite often.
Rex