Specifications

RFID Commands
^HL or ~HL
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45541L-004 Rev. A ZPL II Programming Guide 9/15/06
^HL or ~HL
Return RFID Data Log to Host
Description The printer continually logs RFID data and stores it in the printer’s RAM. Use
this command to request that the RFID data log be returned to the host computer, to clear the
current data log, and to restart data recording. The data returned show the status of the RFID
read, write, and lock commands and show any resulting error codes.
Format ^HL or ~HL
Comments
• Data is shown in the format sent by the ^RFW command (ASCII, Hex, or EPC).
• In the log, the data displays in this manner:
C,EEEE,DDDDDDDDDDDDDDDDDDDDDDDD
where
C = the RFID operation (R = read, W = write, L = lock)
EEEE = the RFID error code
DDDDDDDDDDDDDDDDDDDDDDDD = data read or written
• If the log exceeds 64K (approximately 2000 operations), the data log is cleared
automatically, and data recording restarts. When this happens, the following appears in the
log:
Logfile automatically reset
• If the printer loses power, the log is lost. If the log results are important to you, retrieve the
log frequently.