All those dropdown boxes on the object can be selected and changed according to your needs.
The Device ID refers to the midi channel of the Juno mine is set to 4 so set this to the midi channel of your Juno.
CCnum refers to the CC number whose data you wish to translate into the sysex data change. eg say nano control outputs cc number 40 on it's first slider, you would set this to 40 on the object.
Ccchnl is the channel you are sending the cc number data on ie the midi channel that the nano control outputs.
You can send the sysex out of the midi host port and can choose which port (this is recommended as sysex sends quite a lot of information.)
However there is a tickbox (sendDin) which when selected sends sysex out of the Din of the Axo.
It's freely configurable to your needs, as I say the example I uploaded shows just a few of the sysex controls of the Juno, if you need more you will have to go in and edit the object yourself.
It is good to learn by doing, helped me a lot, but am happy to guide you if you get stuck as it can be a bit bewildering at first.I am not a programmer at all and muddle through, the best place to start is to look at how the object I uploaded differs to chaocrator's original object and like I said in that original post:
"the sysex string is in decimal so you will have to convert your hex string,
eg alpha juno filter cutoff of (midi channel 4) is;
F0 41 36 03 23 20 01 10 i F7 (where i is the data being changed)
and in the object the sysex string appears as 240,65,54,3,35,32,1,16,i,247
I just used an online hex to decimal convertor"