1. ZPL II, ZBI 2, Set-Get-Do, Mirror, WML Programming Guide
  2. ZPL RFID Commands
  3. ^WT
  • ZPL II, ZBI 2, Set-Get-Do, Mirror, WML Programming Guide
^WT

^WT

Use this command to encode the current RFID tag. Check the amount of data memory available for the tag that you will be using. If you send more data than the memory can hold, the printer truncates the data.

Write (Encode) Tag

The
^WT
command is provided for backward-compatibility with label formats developed for older Zebra RFID printers. Use the
^RF
,
^RM
,
^RR,
 and
^WV
commands in place of the
^WT
 command
Format:
^WTb,r,m,w,f,v
Parameters
Details
b
 = block number
Specifies the block number to encode. This parameter is tag-dependent. For most tags, use block 0.
For EPC Class 0 Plus, block 0 is EPC data, and block 1 is user data.
For the R4Mplus, this parameter does not apply to printers with firmware version SP902X. With other versions of firmware in this printer, you can encode 12 bytes (96 bits) to block 0, but you can encode only the first byte of block 1.
Values:
0 to n, where n is the maximum number of blocks for the tag.
Default:
0
r
 = number of retries
Changes the number of times that the printer attempts to encode a particular block of a single RFID tag. (Same function as the
^RR
 command.)
Values:
0 to 10
Default:
0
m
 = motion
Enables or disables RFID motion. (Same function as the
^RM
 command.)
Values:
0 =
Feed label after writing
1 =
No feed after writing (other ZPL may cause a feed)
Default:
0
w
 = write protect
Values:
0 =
Not write protected
1 =
Write protected
Default:
0
f
 = data format
Values:
0 =
ASCII
1 =
Hexadecimal
Default:
0
For the R110Xi HF:
v
 = reverse the data order
Parameter
v
 is not used in the R2844-Z.
For the R110Xi HF:
Reverses the data order.
Values:
N =
Do not reverse the data order (Most significant byte first for Tag*It and PicoTag. Last significant byte first for I*code and ISO 15693)
Y =
Reverse the data order
Default:
N
For other supported printers:
v
 = verify valid data
For other supported printers:
For reliability, some manufacturers encode tags with known data (such as
A5A5
). This parameter flags whether the preprogrammed data is verified. (Same function as the
^WV
 command.)
Values:
N =
Do not verify
Y =
Verify valid data before writing
Default:
N
Example:
This sample encodes data “RFIDRFID” and will try writing up to five times, if necessary.
^XA
^WT,5^FDRFIDRFID^FS
^XZ