Hi,
the C62 RJ45 sockets for the axis motors have a terminal Err/Res....an error and reset.
The C34CP presumably adapts the HLFB of the servo cable to the Err/Res of the C62.
It is not plain to me how the manufacturer combines all the Err/Res lines or to what ESS pin or pins to which it is attached.
No doubt we could find out but it highlights the problem that the C62 has and other boards like it.....the manufacturer has made
certain decisions regarding how certain functions are handled and to which pin or pins they are connected and you now have to
play catch up.
The simple expedient is cut the RJ45 plug off one of the servo cables, solder the wires onto the C34CP per the diagram provided,
plug it into the C62 with a short jump cable and try it.
A few hours experimenting on the board with a multimeter will teach you what you need to know, more than any 100 videos or 1000 forum posts.
If you which to use the C62...do so If you wish to be the 'master of your own destiny' by using the much simpler C10's....then do that and post the
C62 and C34CPs as surplus for sale.
Craig