BenQ 9H.F6GPK.NA4 Installation Handbook page 34

Setting the ID number of each display: PL460/PH460/PL550/PH550
Once you have installed the video wall, you need to set an ID number for each display to
identify one among the multiple displays easily. This is helpful for video wall management, such
as power management, OSD control, or color management. It is also helpful if additional
adjustment is required for a specific display.
To set the ID number, go to Setting > Set Monitor ID on each display for configuration. Pay
attention not to set the same ID number for different displays, as the commands for video wall
management would not be received correctly.
Set the ID number starting from 1 to 98, depending on the number of displays daisy chained.
There is no specific direction while going through all displays setting up the ID numbers.
Following are some examples for your reference.
To set the ID number of each display for PL490/PL552/PL553/PH5501/PH5502, adjust the ID number for
controlling the display via the RS232C connection. Each display must have a unique ID number when multiple sets
of this display are connected. Monitor ID number range is between 1 to 225. The default setting is 1.
All models of MDA only support from 1-98.
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