44 
 
 
(4) When you change Character height of both Nozzle 1 and Nozzle 2 to 50: 
 
Step 1. Select Nozzle 1 and Nozzle 2 respectively, and write “50” on Character height by Holding 
Register writing.   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(5) When you get Unit information of IJ Printer:   
 
Step 1. Read Unit information by Input Register reading.   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
External unit  IJ Printer 
1 Read Unit information by Input Register reading. (function code: 0x04). 
[Request message data of Input Register reading] 
0000 0000 0006 01 04 0000 0008 
[Response message data of Input Register reading] 
0000 0000 0013 01 04 10 0031 0031 0030 0030 0000 0000 0000 0000  (Hexadecimal notation) 
Input Register reading request 
Input Register reading response 
External unit  IJ Printer 
1 Select Nozzle 1 and Nozzle 2 respectively, and write “50” on Character height by Holding 
Register writing. (function code: 0x10). 
[Request message data of Holding Register writing] 
0000 0000 0009 03 10 19A0 0001 02 0032 
[Response message data of Holding Register writing] 
0000 0000 0006 03 10 19A0 0001  (Hexadecimal notation) 
Reflection in progress 
Holding Register writing request 
Holding Register writing response