I am pete over there on the OpenHab forum and haven't been there in a while such that I do not know. There are a few folks now playing with the OmniPro bindings. I do not think there is any one person that has taken ownership of it.
This binding here ==>
OmniLink Binding
is for OpenHab version 1 and does work. Just run it and it creates a log file of all of the Omni Pro devices.
You take that log file and use it to create the HAI variables.
Try it...follow the step by step relating to installing Openhab. Most important piece (as in any of the Omni software is this piece).
#################################Omnilink##################################################
#
#Enter the port (4369) host ip or name and the two crypto keys for your omni panel. The
#two keys may be found in the installer menu on a HAI keypad or touchscreen. Each key is
#16 hex characters in pairs separated by colons (aa:bb:cc)
#
#if generateItems is set to true then the binding will print all known items and a sample
#sitemap to the log file (INFO). Useful when setting up for the first time.
#
omnilink

ort=4369
omnilink:host=panel.yourdomain.com
omnilink:key1=00:AA:BB:CC

D:EE:FF:11
omnilink:key2=00:AA:BB:CC

D:EE:FF:11
omnilink:generateItems=true
The initial log is the configuration of all of your Omni variables.
This was the one that Digital Dan created and is not supporting today.
You do not even have to utilize your own panel for testing if you utilize the test WAN OmniPro IP.
Well just checked (with snaplink) on the wan demo ip and it is no longer active.
At the time of contact to Digital Dan way back; he was not aware of this testing on the WAN ip and configuration.
The IP is still up and I can ping it. Doing a port scan to see if there is still a port open on the IP.
The IP is: 65.82.228.37 and the old port was 8738 (which is not open now). The keys were all zeros.
It is not really that plug n play unless you put the OpenHAB hat on.