generic-pjlink

PJLink

PJLink is a projector control standard created by the Japan Business Machine and Information System Industries Association (JBMIA). This module implements most commands and data available for both Class 1 and Class 2 protocols.

Note: The authorization 'password' sequence generates a random number used a control ticket to validate messages. This number resets whenever a connection is started. If you access a projector from two different controllers, this number gets regenerated for nearly every command or query as each connection resets the control ticket. This may appear as if the projector is frequently dropping offline.

Available Commands for PJLink

Power On/Off Projector
AV Mute Projector
Freeze / Unfreeze Input
Change Input (Dynamic Input Names from Projector)
Speaker Volume Up by 1
Speaker Volume Down by 1
Note: <br>Class 2 projectors provide actual input names <br>Class 1 Projectors will create generic names based on the input type:
- 1: RGB (analog)
- 2: Video (analog)
- 3: Digital (SDI, DVI, HDMI)
- 4: Storage (USB, SD Card)
- 5: Network (HD-BaseT, NDI)
- 6: Internal (Flash memory Logo or still)

Available Variables for PJLink

Projector Class
Projector Name
Projector Manufacturer
Projector Product Name
Projector Other Info
Error Status
Freeze Status
Input Horizontal Resolution
Input Vertical Resolution
Recommended Horizontal Resolution
Recommended Vertical Resolution
Lamp Hour (Lamps 1 to 8) (N/A for laser units)
Lamp On (Lamps 1 to 8)
Serial Number
Software Version
Filter Usage Time
Filter Replacement Model Number
Lamp Replacement Model Number
Mute Status
Power Status
Projector Input
Note: Some variables are only available with Class 2 protocol. These will show as 'N/A' on a Class 1 projector.