User's Guide
April 4, 2019
USER GUIDE: UBS-200L LF DESKTOP READER
33
Chapter 3 – Operating and Configuring the UBS-200L | Unified Information Devices
001.006.03 v1.3
Echo “EC X”
The “EC” command causes the LF Module to echo received commands back to the host, prior to
executing them. This can occasionally be useful, if the terminal software does not support a “Local
Echo” function. Sending the command “EC 1” will turn on this feature. Sending the command “EC 0”
will turn off the Echo feature. The feature is off by default.
Information:
Even with the Echo feature turned ON, the UBS-200L will NOT send
a <LF> character. Further, this feature may adversely affect
communications with software packages that do not expect
commands to be echoed back. Therefore, best practice is to keep
this feature turned OFF, and use the “Local Echo” and “Line Feed”
features in the terminal software.
Get Transponder Time-Out “TOR X”
The “GT” command has a 1.5 second time-out by default. The length of this time-out can be adjusted
using the “TOR” command. The parameter value can be any value from 0 to 255, and is multiplied by
100 ms to determine the actual duration of the time-out. i.e. “TOR 100” sets the time-out to 10,000 ms,
or 10 seconds.
This parameter also determines the speed at which transponder data is repeated in MD2 and MD 4
modes, provided CID is set to 0.
Save to Module EEPROM “VSAVE”
Changes to parameters within the LF Module are valid only until the unit is powered down or reset. The
“VSAVE” command can be issued to store the new parameter values in EEPROM, so that they remain
permanent even after the unit powers down or is reset.
Reset “RST”
Issuing the “RST” command causes the LF Module to perform a soft reset. Changes to any Module
parameters that were not saved using the “VSAVE” command will be lost, and the previous settings will
be restored.
“INIT”
Issuing the “INIT” command causes the LF Module to perform a soft reset with default parameters. This
is useful to restore the Module to its default state. To permanently restore default settings, issue the
“INIT” command followed by the “VSAVE” command.
Get Device S/N “DSN”
Issuing the “DSN” command returns the LF Module serial-number. Typically, this matches the last 6
digits of the UBS-200L Serial Number.