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 4” command
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.