6ES7972-0CB20-0XA0 Difference

Now there are 3 versions 6ES7972-0CB20-0XA0, each version has different functions, do you know?

Same

all support PPI MPI communication
Support system WIN7(32/64 Bit)/XP/VISTA
Bound rate PPI: 9.6k, 19.2k, 187.5k MPI: 19.2k, 187.5k
Operating temperature -30°C – 75°C
Package 1*USB Cable, 1*DB9 Pin Cable, 1*Adapter

Different

Multipurpose Version: cable 2.5m
Isolation Type: cable 4.5m support Long time monitor
MPI (10thgeneration): cable 4.5m support Long time monitor

6ES7972-0CB20-0XA0