Printronix SL4M Reference Manual

Page of 112
Host Verification
79
Host Verification
IMPORTANT
This command requires the use of the Return Status port. See 
“Return Status Port” on page 83.
Purpose
This command sends back the data in a ^FN (Field 
Number) field to the host.
Format
^HV
x,y,<ASCII>
^HV
Host Verification command.
x
Specified Field Number. The default is 0. 
The acceptable value range is 0 to 9999.
y
Number of characters to be returned. The 
default is 64. The acceptable value range 
is 0 to 256.
<
ASCII>
Header (in uppercase ASCII characters). 
The default is None. The acceptable value 
range is 0 to 256 characters.
Example of Use
^XA
^WT0^FDHELLOTAG^FS
^RT3,0,1,1^FS
^FO100,100^A0N,60^FN3^FS
^HV3,16,TAGNO = ^FS
^XZ
Example of Response
TAGNO = 48454C4C4F544147
ZGL EPC Programming Examples
IMPORTANT
For all examples make sure Label Length in the QUICK SETUP 
menu matches the physical length of the installed media.
Example 1
This programming example programs data into an 
RFID tag and prints the encodation onto a smart label.
^XA
//Begin ZPL form.
^WT0^FH^FD_87_D0_03_45_67_AB_CD_EF^FS
//Write Tag with data = “87D0034567ABCDEF”
//(hex format).