Chapter 3 RFID PGL Commands
58
Read Tag
Read Tag is not a command, but an element of the ALPHA and
BARCODE commands. See “Alphanumerics”and “Bar Codes”in
the

IGP/PGL Programmer’s Reference Manual

for more
information.
Purpose Embed RFID data into an ALPHA or BARCODE data
field.
Format <RDI>

position,length[,format];

<RDI> The RFID Data Indicator character, as
defined by the RFREAD parameter in the
ALPHA or BARCODE commands. See
the ALPHA and/or BARCODE command
description for details.

position

The decimal number that specifies the
starting position of the data inside the
transponder.

length

The decimal number that specifies the
length of the data to be read.

format

Replace the optional

format

parameter
with any non-zero number to convert the
data to hexadecimal format.
Example
Write tag contents, then read and insert the tag contents into an
ALPHA field.
~CREATE;READTAG
// Create the READTAG form.
RFWRITE;AT1;*HELLOTAG*
// Program the string “HELLOTAG”into the tag
ALPHA
// The following ALPHA element is defined below:
RFREAD@;AF1;27;3;5;0;0
// RFID Data Indicator character is “@”.
// Dynamic field number of this ALPHA element is 1.
STOP
// Terminate the ALPHA element definition.