How Data Is Stored On An Rfid Tag; Writing Hex Or Ascii Formats; Writing Numerical Formats; Creating A Sample Label Format - Intermec EasyCoder 3240 Developer's Manual

Chapter 2 — Designing Bar Code Labels

How Data is Stored on an RFID Tag

Creating a Sample Label Format

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Data written to the RFID tag is stored from the left starting with the byte
that is defined as the start of field byte and then going the length of the
defined field (in bytes).

Writing Hex or ASCII Formats

If the tag format is hex or ASCII and the field source data string is shorter
than the allocated number of bytes, the data string's least significant bytes
(from the right) are padded with zeroes until they fill the length of the field.
If the field source data string is longer than the allocated number of bytes,
the error <EOT> is sent and nothing is written to the tag. If auto-transmit
level 3 is enabled, an <EOT> status response is returned to the host.

Writing Numerical Formats

If the tag format is numerical (NUM), the data is stored as a numerical
value. In this tag format, if the field source data string is shorter than the
allocated number of bytes, the data string's most significant bytes (from the
left) are padded with zeroes until they fill the length of the field.
Note: The number of bytes needed to represent a numerical value is never
greater than the number of bytes needed to represent the number as a data
string.
In this example, you will design a simple label that includes a human-
readable field, a line field, and a bar code field.
On a blank label, sketch a format that looks roughly like the sample. Use a
human-readable field and a barcode field, and separate them with a line
field.
THIS IS THE SAMPLE LABEL
*SAMPLE*
*SAMPLE*
Sample Label: This sample uses a human-readable field, a line field, and a bar code field
with interpretive field enabled.
Intermec Printer Language (IPL) Developer's Guide