Programmer's Reference Manual Intermec Fingerprint® v8.70.0 ...

Chapter —Program Instructions
TAGFIELD
Purpose Statement defining a field in the RFID tag's memory area available for
RFID operations.
Syntax TAGFIELD[,][,[,]]
is the optional name of the field to make available.
1
is the name of the segment to make available. Allowed values:
2
Class 1 tags (EPC Class 1 Version 1):
"@ID" Tag identification segment for EPC data. Default.
ISO18000-6B / EPC UCode 1.19 tags:
"@ID" Tag idenitifcation segment. Default.
"@DATA" Optional data segment.
"@ALL" Tag's complete memory structure.
Gen 2 tags (EPC Class 1 Generation 2):
"@RESERVED" Access and kill password segment.
"@EPC" EPC specific data. Default.
"@TID" Tag identifier.
"@USER" User defined data.
is the field's starting byte in the chosen segment. Default varies
3
according to RFID tag standard and segment in use.
is the length of the field in bytes. Default varies according to the
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RFID tag standard and EPCGlobal tag format in use.
Remarks The TAGFIELD command is used to specify the field available for
subsequent RFID commands, such as TAGWRITE or TAGREAD. The
memory structure of RFID depends on the tag type. Class 1 tags only
allow the "@ID" segment, where EPC data is stored. The ISO18000-6B,
or EPC UCode 1.19 tags contains two segments, "@ID" and "@DATA".
Gen 2 RFID tags have four segments, "@RESERVED", "@EPC",
"@TID", and "@USER". Chapter 6 contains tables with the memory
structure of supported tag types.
In order to support legacy programs written for Class 1 or ISO18000-6B
tags when migrating to Generation 2 tags, Fingerprint will map the "@ID"
and "@DATA" fields to "@EPC" and "@USER" fields respectively.
The and parameters specify a subset of a segment as the
3 4
currently available field. It is possible to name the field to use with . 1
This name may not start with an @-character. A possible representation
of tag segments of a ISO18000-6B tag can be seen in the figure ni the
example. The default values for and may be modified
1 2
by a subsequent TAGFORMAT command, see Chapter 6. Values for
and do not normally need to be set when writing EPC
3 4
information, as these are automatically adjusted for the EPC tag format
specified. The only exception is ISO 18000-6B tags, see Chapter 6, Tag
Memory Allocation.
The TAGFIELD command resets the TAGFORMAT to its default.
Related commands are TAGFORMAT, TAGREAD and TAGWRITE.
70 Intermec Fingerprint v8.70.0/v10.0.0 Programmer´s Reference Manual