1sane-st400(5)            SANE Scanner Access Now Easy            sane-st400(5)
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NAME

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

9       The  sane-st400  library  implements  a  SANE (Scanner Access Now Easy)
10       backend that provides access to Siemens ST400 flatbed scanners and com‐
11       patibles.   At  present,  the  following scanners are supported by this
12       backend:
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14              Siemens ST400 (6 bit gray scale)
15              Siemens ST800 (6 bit gray scale)
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17       The driver supports line art and gray scans up to 8bpp.
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19       The Siemens ST/Highscan series includes several more models,  e.g.  the
20       ST300  and ST600.  If you own one of these scanners, or a scanner other
21       than the ones listed above that works with this backend, please let  us
22       know  by  sending the scanner's model name, SCSI ID, and firmware revi‐
23       sion   to   sane-devel@lists.alioth.debian.org.    Have   a   look   at
24       http://www.sane-project.org/mailing-lists.html  concerning subscription
25       to sane-devel.
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DEVICE NAMES

29       This backend expects device names of the form:
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31              special
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33       Where special is either the path-name for the special device that  cor‐
34       responds  to a SCSI scanner. For SCSI scanners, the special device name
35       must be a generic SCSI device or a symlink to  such  a  device.   Under
36       Linux,  such  a device name could be /dev/sga or /dev/sge, for example.
37       See sane-scsi(5) for details.
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CONFIGURATION

40       The contents of the st400.conf file is a list of device names that cor‐
41       respond  to  Siemens  scanners.   Empty lines and lines starting with a
42       hash mark (#) are ignored.  A sample configuration file is shown below:
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44              /dev/scanner
45              # this is a comment
46              /dev/sge
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48       The default configuration file that is distributed with SANE looks like
49       this:
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51              scsi SIEMENS "ST 400" Scanner * * 3 0
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53       In  this  configuration,  the driver can only access the ST400 model at
54       SCSI ID 3 LUN 0 (see section "BUGS" below for the reason).  To use  the
55       driver  with  other scanner models, add an appropriate line to the con‐
56       figuration file.  For example, to use it with an ST800 at SCSI ID 3 LUN
57       0, add the line:
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59              scsi SIEMENS "ST 800" Scanner * * 3 0
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FILES

63       /etc/sane.d/st400.conf
64              The   backend   configuration  file  (see  also  description  of
65              SANE_CONFIG_DIR below).
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67       /usr/lib64/sane/libsane-st400.a
68              The static library implementing this backend.
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70       /usr/lib64/sane/libsane-st400.so
71              The shared library implementing this backend (present on systems
72              that support dynamic loading).
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ENVIRONMENT

75       SANE_CONFIG_DIR
76              This environment variable specifies the list of directories that
77              may contain the configuration file.  Under UNIX, the directories
78              are  separated  by a colon (`:'), under OS/2, they are separated
79              by a semi-colon (`;').  If this variable is not set, the config‐
80              uration  file is searched in two default directories: first, the
81              current working directory (".") and then in /etc/sane.d.  If the
82              value  of the environment variable ends with the directory sepa‐
83              rator character, then the default directories are searched after
84              the  explicitly  specified  directories.   For  example, setting
85              SANE_CONFIG_DIR to "/tmp/config:" would  result  in  directories
86              "tmp/config",  ".",  and  "/etc/sane.d"  being searched (in this
87              order).
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89       SANE_DEBUG_ST400
90              If the library was compiled with  debug  support  enabled,  this
91              environment  variable controls the debug level for this backend.
92              E.g., a value of 128 requests all debug output  to  be  printed.
93              Smaller levels reduce verbosity.
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MISSING FUNCTIONALITY

97       Everything but the most basic stuff.
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BUGS

101       Currently,  the backend does not check if the attached device really is
102       a ST400.  It will happily accept everything that matches the configura‐
103       tion  entries.  This makes it easy to test the backend with other scan‐
104       ners: Just add an appropriate line to the configuration file.  The con‐
105       figuration  file  as distributed (see above) only works with the ST400.
106       Be careful: If there is no config file at all, the backend defaults  to
107       /dev/scanner.
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109       The ST400 answers on all eight SCSI LUNs.  Normally this is not a prob‐
110       lem, as LUN support is usually disabled in SCSI drivers, but if you are
111       seeing  multiple instances of the scanner in a device list, either dis‐
112       able LUNs in your SCSI setup or change the entry in  the  configuration
113       file to match LUN 0 only.
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DEBUG

117       If   you   encounter   a   bug  please  set  the  environment  variable
118       SANE_DEBUG_ST400 to 128 and try to regenerate the problem. Then send me
119       a report with the log attached.
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121       If  you  encounter  a SCSI bus error or trimmed and/or displaced images
122       please also set the environment variable SANE_DEBUG_SANEI_SCSI  to  128
123       before sending me the report.
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SEE ALSO

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

132       Ingo Wilken <Ingo.Wilken@informatik.uni-oldenburg.de>
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136                                  14 Jul 2008                    sane-st400(5)
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