Ran the comparison, they seem to be identical. The only difference is the Can port used on the device, BMSCan on one Cerbo and the VE.Can port on the Cerbo-S
I think the answer must lie in the lookup table described here:
I managed to run the octal dump vecan-dbus but it didn’t seem to have the register numbers associated. The od command also doesn’t like the width control (-w)