VMS Help  —  ROBOT  Connectivity  DSSI Devices
  Command Completion Time

  Commands issued to robotic devices connected with a DSSI
  may take a minute or more to complete. The delays in
  command completion occur to properly synchronize the DSSI
  loader device.

  Manual TF8x7 Operations Can Stop Automated Operations

  The TF8x7 does not respond to Media Robot Utility system ROBOT LOAD
  and ROBOT UNLOAD operations after an operator manually unloads a
  cartridge. Other MRU status commands respond correctly.

  After a manual unload is executed, the ROBOT LOAD or ROBOT UNLOAD
  commands complete immediately and give no error messages.   The
  ROBOT SHOW DRIVE and ROBOT SHOW SLOT do properly reflect whether a
  cartridge is loaded in the drive or residing in the loader.

  The MRU software continues to provide proper status after manually
  loading and unloading various slots even though the MRU LOAD AND
  UNLOAD commands no longer execute properly.

  Restoring the communication path between the TF loader and  the
  operating system requires a complete re-initialization of the DSSI
  server embedded in the TF loader.  There are two ways in which this
  can be done.

  Cycle power to the TF loader:

      1. Turn power to the TF loader OFF
      2. Wait 10 seconds
      3. Turn power to the TF loader ON

  Execute the following command sequence either maually through DCL,
  or programatically:

      $ SET HOST/DUP/SERVER=MSCP$DUP/TASK=PARAMS xxxx
          (where xxxx is the DSSI NODE name of the TF loader)
      PARAMS> SET INITWATERMARK 100
      PARAMS> WRITE
      Parameter changes require controller initialization, ok?[Y/(N)] y

  Wait for the DSSI node to transition from HostUnavailable to Online
  (60 - 90 seconds).
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