I access those logs with either “my-rpi-ip”:9001
Or when I PuTTy (is that Telnet?) to “my-rpi-ip”:22 , login and then use the command “openhab-cli showlogs”
Maybe some extra info: @MDAR has helped me a lot in these forum entries:
https://forumtest.velbus.eu/t/velbus-binding-for-openhab/14992/151
https://forumtest.velbus.eu/t/how-to-install-and-run-velserv-a-velbus-tcp-gateway/15422/2