User's Guide

April 4, 2019
USER GUIDE: UBS-200L LF DESKTOP READER
17
Chapter 3 Operating and Configuring the UBS-200L | Unified Information Devices
001.006.03 v1.3
Continuous Custom Read Mode “MD 4
It may be desirable to get custom data from multiple transponders in succession. The “MD 4command
puts the UBS-200L into “Continuous Read” mode, using two additional parameters similar to those of
the “GTC” command. In this mode, the UBS-200L enters a new read cycle at the completion of the
previous one. If no transponder is read during a read cycle, “XXXXXXXX” is returned, and a new read
cycle begins. If a transponder is read, the transponder data is returned according to the parameters,
and a new read cycle begins.
Information:
In “Continuous Read” mode, a new read cycle begins immediately
once a transponder is read and its data returned. As such, a
transponder remaining in the UBS-200L’s field will cause the data
to be returned several times in succession, until the transponder
leaves the read field. This behavior can be prevented by using the
CID command.
Information:
If the “CN” parameter is set to 1 and no transponder is presented,
the “XXXXXXXX” indicator will be suppressed, and NOTHING will
be returned to the host.
Select/Change Active Antenna Port “MP”
Issue the “MP” command, followed by the desired antenna port number to switch active antenna ports.