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).