Rockwell Automation 2755 AtomScan Bar Code Reader - Manual (Page 70)

5–25 Configuring Your Reader
Publication 2755-6.9
To ensure that a command was received and accepted, you can enter
the Show Scanner Status command, <?>.
Concatenating Serial Commands
Commands can be concatenated (added together) to a maximum of
64 characters in a single string or data block. Additional data blocks
of 64 or less characters can be sent provided there is at least a 10 ms
pause between blocks.
For example, <Kc1><Kh1><Ko1><A> enables LRC, sets End of
Read Cycle mode to New Trigger, enables Narrow Margins and
resets the data buffers (without saving the changes for power-on).
Serial Command Status Request
The status of serial commands can be requested by entering the
command followed by a question mark. For example, press
[<Ke?>]
to request the Postamble status.
Losing Communications
Making changes to communications parameters such as Baud Rate,
Parity, Stop Bits, LRC, etc. without corresponding changes in linked
device(s) can result in the loss of menu access. If this should occur,
default the reader with the <Zd> Restore/Save Default Configuration
for Power-on command.
Note: Defaulting the reader will reset all standard configuration
parameters except Scanner Type, Scans per Second, and Gain
Adjustment to their original default values.
Note: Power must be available to the reader during the default
procedure.