Edit: The binding for Panasonic projectors is now available via the Add-On Marketplace.
Link: Panasonic Projector Binding [3.2.0.0;5.9.0.0)
A build for openHAB 2.x is available here:
https://github.com/mlobstein/openhab-addons/releases/download/v1.0/org.openhab.binding.panasonicprojector-2.5.11-SNAPSHOT.jar