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78 R110Xi/R170Xi User Guide 12/23/04 23063L-003 Rev. 2
RFID Guidelines
^HR
^HR
Calibrate RFID Transponder Position
Description This command initiates an RFID transponder calibration for a specific RFID
label and returns the results to the host computer. This calibration is used to determine the
optimal programming position for RFID media that may not meet the transponder placement
specifications for the printer.
During transponder calibration, the printer feeds the RFID label one-dot row at a time while
taking readings (via the READ TAG command and the WRITE TAG commands) to profile the
RFID transponder. Based on the results, the printer determines the optimal programming
position for the label and returns a results table to the host. The calibrated value is used as the
programming position for the
^RS command, can be overwritten by the ^RS command, and is
saved to nonvolatile memory (the value is saved even if the power is turned off).
This calibration takes into account the print mode, backfeed mode, and tear off position. The
RUN
option in the
RFID TAG CALIB
front panel parameter performs the same calibration
but does not create a results table.
Format
^HRa,b
The following table identifies the parameters for this format.
Comments
• Based on the recommended transponder placement position for most RFID labels, the
printer’s default RFID programming position is the label length minus 1 mm (1/16 in.).
To return to the default programming position at any time, use the RESTORE option in the
RFID TAG CALIB
front panel parameter (see Calibrate RFID Tag on page 63).
Note • You do not need to perform transponder calibration for RFID media that meets the
transponder placement specifications for the printer. To order media that is designed for use
with your RFID printer, contact your authorized Zebra reseller.
If a label format specifies a value for parameter
p (read/write position of the transponder) in
the
^RS command, that value will be used for the programming position for all RFID labels
until a new position is specified or until the printer is turned Off (
O) and then back On (I).
Parameters Details
a = start string User text to appear before the results table.
Accepted values: any string less than 65 characters
Default value: start
b = end string User text to appear after the results table.
Accepted values: any string less than 65 characters
Default value: end