PJLink is a standard created by some of the biggest projector manufacturers in the world, mainly Japanese.
The standard makes users able to combine many different vendors without having to think of the hassle it is to administrate different communication protocols.
Biamp interacts with the PJLink standard, all you need to do is to create a new device driver in Device Editor and go into the LAN section and select PJLink in the Protocol drop down box.
Below, you can see a short video on how to create a PJLink device in less than 2 minutes.
Remember it isn't possible to control Volume through PJLink.