Chapter 6. Theory of Operation
EK–MOL80–SV. B01
6–3
For example. "Move element 33 to element 2 with flip" is transformed into the
following sequence of autochanger functions.
1. Determine that element 33 is a storage slot and element 2 is a drive.
2. Move the picker to the front of the storage element.
3. Get the cartridge from the storage element.
4. Do a flip.
5. Move the picker to the front of the disk insertion slot on the drive element.
6. Put the cartridge into the drive element.
The basic autochanger functions (macro-moves) are then divided into a series of
smaller movements called "micro-moves." There are two types of micro-moves:
•
position move – move the driving motors a given distance at peak speed
•
saturation move – same as a position move except that a high force is
expected within a given distance; however, motion is halted if force exceeds a
specified threshold.
Position moves are used for high-speed, unobstructed movements of a known
distance. Saturation moves are used in low-speed, adaptive movements of vari-
able distance.
Macro-moves consists of one or more combinations of position or saturation type
micro-moves. Each macro-move has a tailored set of these submoves to insure
that the macro-move will be gentle. As a macro-move is executed, servo gains
are adjusted to allow for changes in load characteristics.
Each micro-move within a specific macro-move has a unique set of stability,
performance, error recovery, force, and reliability criteria. Therefore, each
micro-move is assigned a unique identification code (ID) which is used to deter-
mine how the move should be performed.
Содержание RW551
Страница 27: ...Medium Optical Disk RW551 RW552 Library 3 2 EK MOL80 SV B01 Figure 3 2 Rear Panel SCSI Connect...
Страница 34: ...Chapter 3 Product Configuration and Operation EK MOL80 SV B01 3 9 Figure 3 4 Control Panel Menu Tree...
Страница 92: ...end...
Страница 139: ...Chapter 5 Removal and Replacement EK MOL80 SV B01 5 47 Figure 5 49 Jukebox Exploded View 1 of 2...
Страница 140: ...Medium Optical Disk RW551 RW552 Library 5 48 EK MOL80 SV B01 Figure 5 49 Jukebox Exploded View 2 of 2...
Страница 141: ...Chapter 5 Removal and Replacement EK MOL80 SV B01 5 49 Figure 5 50 Jukebox Power Harness...
Страница 142: ...Medium Optical Disk RW551 RW552 Library 5 50 EK MOL80 SV B01 Figure 5 51 Jukebox Pulley and Rope Diagram...
Страница 166: ...Chapter 6 Theory of Operation EK MOL80 SV B01 6 23 Figure 6 10 User Zone Layout for 1 3 Gbyte Media g 1...
Страница 167: ...Medium Optical Disk RW551 RW552 Library 6 24 EK MOL80 SV B01 Figure 6 11 User Zone Layout for 1 3 Gbyte g 16...
Страница 168: ...Chapter 6 Theory of Operation EK MOL80 SV B01 6 25 Figure 6 12 User Zone Layout for 2 6 Gbyte Media 1 024 bytes sector...