Sigma LBA-400 Manuel D’Utilisation

 

 

# 

= 

ASCII pound character (0x23) 

 

n 

= 

ASCII decimal digit ranging from 1 to 9.  This value specifies the 

number of digit elements, d..d, that follow. 

 

d..d 

= 

ASCII decimal integer that specifies the number of data words that 

follow. 

 

(DAW)  = 

Data Word.  Two 8-bit data bytes, low byte followed by high byte. 

 
The data is transmitted in a row and column sequence beginning at the display’s upper left-hand 

corner, proceeding row by row and ending at the lower right-hand corner. 
The following example describes how the host controller requests the current frame and receives 

the data.  The received data frame has the dimensions of  64 X 60.  Therefore, the LBA-PC 

transmits 3840 data words (pixels), or 7680 bytes to the host controller. 

Host sends 
 :RDD?(^END) 
 

 

LBA-PC sends 
 RDD 
 FrameNumber=9; 
 Width=64; 
 Height=60; 
 #43840(DAW)…(DAW)(^END)

 

 

 

The following example describes how the host controller requests and receives data in frame 

number 17.  The LBA-PC sends the 32 X 30 frame as 960 data words or 1920 bytes. 

Host sends 
 :RDD? 
 FrameNumber=17(^END) 
 

 

LBA-PC sends 
 RDD 
 FrameNumber=17; 
 Width=32; 
 Height=30; 
 #3960(DAW)…(DAW)(^END)

 

 

 

Operator’s Manual 

 

LBA-PC 

 

190

Four commands allow you to download, upload, read or write data files.  These commands are: