Prevent/Allow Medium Removal
180 SL500: Interface Reference Manual • July 2008 Revision: F • 96122
Prevent/Allow Medium Removal
The Prevent/Allow Medium Removal command (1Eh) requests that the library
enable or disable operator access to the cartridge access port (CAP).
■ If allowed, the CAP may be unlocked and opened using the operator panel.
■ If prevented, the CAP cannot be unlocked or opened.
This command is independent of device reservations if the Prevent bit is 0.
The library keeps Prevent/Allow data on a per-initiator basis. If any initiator has
set a prevent state, the library prevents anyone from opening the CAP.
During power-on and following a reset, all initiators are set to an allow state,
which enables operator panel access to the CAP.
The Prevent/Allow Medium Removal command has no effect on the Pass- Thru-
Port; it can only be used to affect access to the CAPs.
TABLE 6-69 Prevent/Allow Medium Removal Command
Byte
Bit
76543210
0 Operation Code (1Eh)
1 Ignored Reserved (00h)
2 Reserved (00h)
3 Reserved (00h)
4 Reserved (00h) Prevent
5 Control Byte (00h)
Prevent/Allow Medium Removal Command Definitions:
Prevent Bit The Prevent bit values are:
■ 0 = The library allows operator panel access to unlock and open the
indicated CAP.
■ 1 = The library prevents access to the indicated CAP.
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