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sane-st400(5)             SANE Scanner Access Now Easy             sane-st400(5)




NAME

       sane-st400 - SANE backend for Siemens ST/Highscan flatbed scanners


DESCRIPTION

       The sane-st400 library implements a SANE (Scanner Access Now Easy)
       backend that provides access to Siemens ST400 flatbed scanners and
       compatibles.  At present, the following scanners are supported by this
       backend:

              Siemens ST400 (6 bit gray scale)
              Siemens ST800 (6 bit gray scale)

       The driver supports line art and gray scans up to 8bpp.

       The Siemens ST/Highscan series includes several more models, e.g. the
       ST300 and ST600.  If you own one of these scanners, or a scanner other
       than the ones listed above that works with this backend, please let us
       know by sending the scanner's model name, SCSI ID, and firmware revision
       to sane-devel@alioth-lists.debian.net.  Have a look at
       http://www.sane-project.org/mailing-lists.html concerning subscription to
       sane-devel.



DEVICE NAMES

       This backend expects device names of the form:

              special

       Where special is the path-name for the special device that corresponds to
       a SCSI scanner. For SCSI scanners, the special device name must be a
       generic SCSI device or a symlink to such a device.  Under Linux, such a
       device name could be /dev/sga or /dev/sge, for example.  See sane-scsi(5)
       for details.



CONFIGURATION

       The contents of the st400.conf file is a list of device names that
       correspond to Siemens scanners.  Empty lines and lines starting with a
       hash mark (#) are ignored.  A sample configuration file is shown below:

              /dev/scanner
              # this is a comment
              /dev/sge

       The default configuration file that is distributed with SANE looks like
       this:

              scsi SIEMENS "ST 400" Scanner * * 3 0

       In this configuration, the driver can only access the ST400 model at SCSI
       ID 3 LUN 0 (see section BUGS below for the reason).  To use the driver
       with other scanner models, add an appropriate line to the configuration
       file.  For example, to use it with an ST800 at SCSI ID 3 LUN 0, add the
       line:

              scsi SIEMENS "ST 800" Scanner * * 3 0



FILES

       /opt/local/etc/sane.d/st400.conf
              The backend configuration file (see also description of
              SANE_CONFIG_DIR below).

       /opt/local/lib/sane/libsane-st400.a
              The static library implementing this backend.

       /opt/local/lib/sane/libsane-st400.so
              The shared library implementing this backend (present on systems
              that support dynamic loading).


ENVIRONMENT

       SANE_CONFIG_DIR
              This environment variable specifies the list of directories that
              may contain the configuration file.  On *NIX systems, the
              directories are separated by a colon (`:'), under OS/2, they are
              separated by a semi-colon (`;').  If this variable is not set, the
              configuration file is searched in two default directories: first,
              the current working directory (".") and then in
              /opt/local/etc/sane.d.  If the value of the environment variable
              ends with the directory separator character, then the default
              directories are searched after the explicitly specified
              directories.  For example, setting SANE_CONFIG_DIR to
              "/tmp/config:" would result in directories tmp/config, ., and
              /opt/local/etc/sane.d being searched (in this order).

       SANE_DEBUG_ST400
              If the library was compiled with debug support enabled, this
              environment variable controls the debug level for this backend.
              E.g., a value of 128 requests all debug output to be printed.
              Smaller levels reduce verbosity.



MISSING FUNCTIONALITY

       Everything but the most basic stuff.



BUGS

       Currently, the backend does not check if the attached device really is a
       ST400.  It will happily accept everything that matches the configuration
       entries.  This makes it easy to test the backend with other scanners:
       Just add an appropriate line to the configuration file.  The
       configuration file as distributed (see above) only works with the ST400.
       Be careful: If there is no config file at all, the backend defaults to
       /dev/scanner.

       The ST400 answers on all eight SCSI LUNs.  Normally this is not a
       problem, as LUN support is usually disabled in SCSI drivers, but if you
       are seeing multiple instances of the scanner in a device list, either
       disable LUNs in your SCSI setup or change the entry in the configuration
       file to match LUN 0 only.



DEBUG

       If you encounter a bug please set the environment variable
       SANE_DEBUG_ST400 to 128 and try to regenerate the problem. Then send me a
       report with the log attached.

       If you encounter a SCSI bus error or trimmed and/or displaced images
       please also set the environment variable SANE_DEBUG_SANEI_SCSI to 128
       before sending me the report.



SEE ALSO

       sane(7), sane-scsi(5)
       http://www.informatik.uni-oldenburg.de/~ingo/sane/



AUTHOR

       Ingo Wilken <Ingo.Wilken@informatik.uni-oldenburg.de>



                                   14 Jul 2008                     sane-st400(5)

sane-backends 1.2.1 - Generated Sat Feb 25 10:15:29 CST 2023
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