Knoll HD290 User Manual

26 

All commands consist of 3 alpha characters followed by a request, all enclosed in parentheses. 
The request can be a read request (indicated by a “?”) or a write request (indicated by 1 to 4 
ASCII digits). 
 
A read request format (AAA?) where 
 
 

 

(  

starts the command 

  AAA 

denotes 

the 

command 

 

 

? 

denotes the read request 

 

 

)  

ends the command 

 
A read command returns the range and the current setting, for example: 
 
 
 Function   Command 

  Response 

 
 Brightness 

  (BRT?) 

   (0-22,10) 

 Lamp 

hours 

  (LMP?) 

   0-9999,421) 

 
 
 
A write request example: (AAA####) where 
 
   ( starts 

the 

command 

   AAA 

 

denotes 

the 

command 

 

 

 

####  denotes the value to be written (leading in zeros not necessary) 

   ) ends 

the 

command 

 

 
Some commands have ranges, while others are absolute. If a number greater than the maximum 
range is received, it is automatically set to the maximum number for that function. If a command 
is received that is not understood, a “?” is returned. With absolute settings, “0” is off, 1-999 is on. 
The one exception is the Power command, where 0 is off and 1 is on. 
 
 

 

 

 

 
  Brightness 

 (BRT10)  Sets 

brightness 

to 

10 

  Power 

  (PWR0) 

  Turns 

power 

off 

  Power 

  (PWR1) 

  Turns 

power 

on 

  Power 

  (PWR9999) 

 ?