| Command | 
       
      $AA9NTS | 
    
    
       | Description | 
       Readback current output value of specified output channel | 
    
    
       | Syntax | 
       
      $AA9NTS[CHK](cr) 
	    
      
      
          
          
 
            | $ | 
            a delimiter character | 
           
          
 
            | AA | 
            address of reading module (00 to FF) | 
           
          
 
            | 9 | 
            command for read DA configuration of channel N 
           | 
           
          
 
            | N | 
            specified channel for read current output value 
             | 
           
          
 
            | T | 
            analog output type. | 
           
          
 
            | S | 
            analog output slewrate. | 
           
          
 
            | [CHK] | 
            2 characters of Checksum | 
           
          
 
            | (cr) | 
            Character Return(0x0D) for denote the end of command | 
           
        
        
        
      
       
	    | 
    
    
       | Response | 
       
	   
      
      
	   
          
	   		  | Valid Command | 
			  
            !AA[CHK](cr) | 
	    
	   
	   	   | Invalid Command | 
		   ?AA[CHK](cr) | 
	    
	   
        
        
      
       
	   Syntax error or communication error may get no response. 
	    
      
      
          
          
 
            | ! | 
            delimiter for valid command | 
           
          
 
            | ? | 
            delimiter for invalid command. | 
           
          
 
            | AA | 
            address of response module (00 to FF) | 
           
          
 
            | [CHK] | 
            2 characters of Checksum | 
           
          
 
            | (cr) | 
            Character Return(0x0D) for denote the end of response | 
           
        
        
        
      
       
	    | 
    
    
       | Example | 
       
	   	   
      
      
		   
          
		   	   | Command | 
			   
            $019121 | 
		    
		   
		   		
            | Response | 
				
            !01 | 
		    
		   
		   	   
            | Description | 
			   
            Set DA configuration of channel 1of address 01 : 0 
              to 10V and slewrate 0.625V/Second, return success.. | 
		    
		   
        
        
      
       
	    | 
    
    
       | Reference | 
       
       $AA9N 
       | 
    
    
      
      
      
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