Specifications

297
RFID Commands
^RF
9/15/06 ZPL II Programming Guide 45541L-004 Rev. A
^RF
Read or Write RFID Format
Description Use this command to read or write to (encode) an RFID tag. When using this
command to read a tag, you may use a field variable to print the tag data on the label or to
return the data to the host.
Format ^RFo,f,b,n
This table identifies the parameters for this format.
Important • This command is not supported by all printers or firmware. See Table 13
on page 287 for the list of printers and firmware with which you can use this command.
Parameters Details
o = operation
The action to be performed.
Accepted values:
W=write to (encode) the tag
L=write with LOCK (if supported by tag type; Gen 2 does not use this
locking function)
R=read the tag
P = read password (Gen 2 only)
Default value: W
f =format
Accepted values:
A = ASCII
H = Hexadecimal
E = EPC (ensure proper setup with the ^RB command)
Default value:
H
b
= starting block
number
Gen 2 tags
Which password to read when P is specified for the operation.
Accepted values:
K=kill password
A=access password
Other Tag Types
Accepted values: 0 to n, where n is the maximum number of blocks for the tag.
Default value:
0
n
= number of bytes to
read or write
Note • This parameter is used only by the R4Mplus with firmware
version SP994X (R4Mplus European version).
This parameter applies only when the starting block number is 1.
Accepted values: 1 to n, where n is the maximum number of bytes for the tag.
For UCODE EPC 1.19, n is 32.
Default value: 1