Computer (host) ; Printer ; READ - Page 45

Raster Command Reference 

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5. Flow Charts 

5.7 Error flow for serial connection (QL-710W / QL-720NW Only) 

Computer (host) 

Status information request 

Data received. 

Printing 

Displaying printing 

Displaying sending 

Sending control codes

Sending raster data

Initialize 

The printer is 
Initialized. 

Sending a print command (print command with feeding (1A) 
for the last page or print command (0C) for other page) 

Phase change 

“Printing” received. 

Status (

“Error Occurred”) 

READ 

Printer 

If there are no 
problems with the 
printer status 
(media, etc.), the 
data is transmitted. 
If there is a problem, 
an error appears.

READ 

Status (response to status information 

request) or an error is displayed 

Status 

(Phase change: 

“Printing”) 

Error occurred 

The status of the 
printer (media, etc.) 
is checked and a 
response is sent.