Have you written any code yet? What have you tried?
It looks like their ESP3 protocol is documented (enocean.com/esp), so at least you’ve got that going in you’re favor. Unfortunately it looks a bit complex, so hacking something together with the serial module in jython may prove quite difficult…
But as I do not have experience with Python code development I am not sure if any or all of this can be used in Ignition.
I am just looking for a proof of concept at this stage, where I know the sensors that are connected and where to locate the data values in the packets.