Connecting to a room controller 49
The following table lists the types of notifications generated in various situations.
Incorrect commands cause the following types of notifications:
• No asterisk at start of command—no response
• Unrecognized command name—command with “?” added
• Command that is currently unavailable—command with “?” added
• Invalid parameter—command with current value
• Action command with unnecessary parameter—action command
• Action command that is unavailable—action command
The following simplified example shows how the projector typically responds to a request to
change the active input source. Note that the three latter notifications are delayed.
This type of request... Generates this type of notification...
Modify a setting Echoes the request command and shows the resulting value:
Request: *BRT=65<CR>
Notification: *BRT=65<CR><LF>
Query a setting Echoes the request command and shows the resulting value:
Request: *CON=?<CR>
Notification: *CON=40<CR><LF>
Execute an action Echoes the request command:
Request: *NXT<CR>
Notification: *NXT<CR><LF>
Request: *RSRC=4<CR>
Notification: *RSRC=4<CR><LF> (acknowledges request)
*SRC=0<CR><LF> (projector is attempting to acquire source 4, and in the interim
has no valid source)
*SRC=4<CR><LF> (source 4 is now active)
*BRT=60<CR><LF> (brightness has been modified for source 4)
*CSPC=?<CR><LF> (color space is not supported for this input)
