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ZPL II Commands for RFID
ZPL Overview
11/14/2008 RFID Programming Guide 58978L-008 Rev. A
ZPL Overview
In addition to reading or encoding RFID tags, the RFID ZPL commands also provide for RFID
exception handling, such as setting the number of read/write retries before declaring a
transponder defective (set with
^RR, ^RT, and ^WT) or setting the number of labels that will
be attempted if an error occurs (set with
^RS).
For example, if an RFID label fails to program correctly or if the transponder cannot be
detected, the printer ejects the label and prints VOID across it. The printer will try to print
another label with the same data and format for the number of RFID labels specified by the
^RS command. If the problem persists, the printer follows the error handling instructions
specified by the
^RS command: the printer may remove the problematic format from the print
queue and proceed with the next format (if one exists in the buffer), or it may place the printer
in Pause or Error mode.
Important • Consider the following before using any command in this section:
• Before using a particular command, verify that it is compatible with your printer and
firmware version. See Table 8 on page 82.
• If a parameter in the following tables is designated as not applicable for a particular
printer, any value entered for the parameter will be ignored, but the place holder for the
field is required.