User's Guide

USER GUIDE: UBS-200L LF DESKTOP READER
April 4, 2019
Unified Information Devices | Chapter 3 – Operating and Configuring the UBS-200L
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Advanced Data-Manipulation Commands
Reading Transponder Data “RD”
Transponder data blocks can only be read in Standby mode. Issue the “MD 2” command to ensure the
LF Module is in Standby mode.
User data is stored in blocks 7-13. Each block contains 4 bytes of data. (8 hexadecimal characters.)
To read data from a data block, issue the “RD” command followed by a space, followed by the number
of the data block to be read. See examples in Figure 11.
Information:
In older “Classic” tags, blocks 3, 5, and 6 can also contain user
data.
Writing Transponder Data “WD”
Transponder data blocks can only be written in Standby mode. Issue the “MD 2” command to ensure
the LF Module is in Standby mode.
Data can be written to blocks 7-13. Each block contains 4 bytes of data. (8 hexadecimal characters.)
To write data to a data block, issue the “WD” command flowed by a <space>, followed by the number of
the data block to be written, followed by a <space>, followed by the hexadecimal data to be written to
that block. See examples Figure 11.
Figure 11. Reading and Writing transponder data blocks.